Home / 20,663,747.79-28,516,233.47-11,372,387.64

Finding the Fourth Proportional to 20,663,747.79, 28,516,233.47 and 11,372,387.64

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Solution

The fourth proportional to 20,663,747.79, 28,516,233.47 and 11,372,387.64 is: 15,694,038.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,663,747.79 : 28,516,233.47 = 11,372,387.64 : x
  2. Step 2: Convert to fraction form
    20,663,747.79/28,516,233.47 = 11,372,387.64/x
  3. Step 3: Cross multiply
    20,663,747.79x = 28,516,233.47 × 11,372,387.64
  4. Step 4: Simplify right side
    20,663,747.79x = 324,297,660,996,720.38
  5. Step 5: Solve for x
    x = 324,297,660,996,720.38/20,663,747.79
  6. Step 6: Final answer
    x = 15,694,038.87

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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.