Home / 13,130,759.76-18,120,379.32-7,625,488.56

Finding the Fourth Proportional to 13,130,759.76, 18,120,379.32 and 7,625,488.56

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Solution

The fourth proportional to 13,130,759.76, 18,120,379.32 and 7,625,488.56 is: 10,523,134.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130,759.76 : 18,120,379.32 = 7,625,488.56 : x
  2. Step 2: Convert to fraction form
    13,130,759.76/18,120,379.32 = 7,625,488.56/x
  3. Step 3: Cross multiply
    13,130,759.76x = 18,120,379.32 × 7,625,488.56
  4. Step 4: Simplify right side
    13,130,759.76x = 138,176,745,207,520.58
  5. Step 5: Solve for x
    x = 138,176,745,207,520.58/13,130,759.76
  6. Step 6: Final answer
    x = 10,523,134.06

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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.