Home / 13,215,352,445.19-18,237,188,341.77-7,193,903,561.36

Finding the Fourth Proportional to 13,215,352,445.19, 18,237,188,341.77 and 7,193,903,561.36

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Solution

The fourth proportional to 13,215,352,445.19, 18,237,188,341.77 and 7,193,903,561.36 is: 9,927,587,985.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215,352,445.19 : 18,237,188,341.77 = 7,193,903,561.36 : x
  2. Step 2: Convert to fraction form
    13,215,352,445.19/18,237,188,341.77 = 7,193,903,561.36/x
  3. Step 3: Cross multiply
    13,215,352,445.19x = 18,237,188,341.77 × 7,193,903,561.36
  4. Step 4: Simplify right side
    13,215,352,445.19x = 131,196,574,160,961,077,248
  5. Step 5: Solve for x
    x = 131,196,574,160,961,077,248/13,215,352,445.19
  6. Step 6: Final answer
    x = 9,927,587,985.65

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Double scale
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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.