Home / 20,639,213.12-30,891,452.36-15,172,860.42

Finding the Fourth Proportional to 20,639,213.12, 30,891,452.36 and 15,172,860.42

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Solution

The fourth proportional to 20,639,213.12, 30,891,452.36 and 15,172,860.42 is: 22,709,765.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,639,213.12 : 30,891,452.36 = 15,172,860.42 : x
  2. Step 2: Convert to fraction form
    20,639,213.12/30,891,452.36 = 15,172,860.42/x
  3. Step 3: Cross multiply
    20,639,213.12x = 30,891,452.36 × 15,172,860.42
  4. Step 4: Simplify right side
    20,639,213.12x = 468,711,694,753,495.31
  5. Step 5: Solve for x
    x = 468,711,694,753,495.31/20,639,213.12
  6. Step 6: Final answer
    x = 22,709,765.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.