Home / 13,215,352,443.69-18,237,188,339.70-7,193,903,559.86

Finding the Fourth Proportional to 13,215,352,443.69, 18,237,188,339.70 and 7,193,903,559.86

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Solution

The fourth proportional to 13,215,352,443.69, 18,237,188,339.70 and 7,193,903,559.86 is: 9,927,587,983.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215,352,443.69 : 18,237,188,339.70 = 7,193,903,559.86 : x
  2. Step 2: Convert to fraction form
    13,215,352,443.69/18,237,188,339.70 = 7,193,903,559.86/x
  3. Step 3: Cross multiply
    13,215,352,443.69x = 18,237,188,339.70 × 7,193,903,559.86
  4. Step 4: Simplify right side
    13,215,352,443.69x = 131,196,574,118,713,917,440
  5. Step 5: Solve for x
    x = 131,196,574,118,713,917,440/13,215,352,443.69
  6. Step 6: Final answer
    x = 9,927,587,983.58

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Double scale
Find fourth proportional to 13,215,352,444.69, 18,237,188,341.08 and 7,193,903,560.86
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.