Home / 20,535,248.79-28,338,978.92-11,242,663.83

Finding the Fourth Proportional to 20,535,248.79, 28,338,978.92 and 11,242,663.83

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Solution

The fourth proportional to 20,535,248.79, 28,338,978.92 and 11,242,663.83 is: 15,515,059.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,535,248.79 : 28,338,978.92 = 11,242,663.83 : x
  2. Step 2: Convert to fraction form
    20,535,248.79/28,338,978.92 = 11,242,663.83/x
  3. Step 3: Cross multiply
    20,535,248.79x = 28,338,978.92 × 11,242,663.83
  4. Step 4: Simplify right side
    20,535,248.79x = 318,605,613,226,803.12
  5. Step 5: Solve for x
    x = 318,605,613,226,803.12/20,535,248.79
  6. Step 6: Final answer
    x = 15,515,059.81

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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.