Home / 20,403,964.80-28,156,561.92-11,695,893.12

Finding the Fourth Proportional to 20,403,964.80, 28,156,561.92 and 11,695,893.12

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Solution

The fourth proportional to 20,403,964.80, 28,156,561.92 and 11,695,893.12 is: 16,139,811.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403,964.80 : 28,156,561.92 = 11,695,893.12 : x
  2. Step 2: Convert to fraction form
    20,403,964.80/28,156,561.92 = 11,695,893.12/x
  3. Step 3: Cross multiply
    20,403,964.80x = 28,156,561.92 × 11,695,893.12
  4. Step 4: Simplify right side
    20,403,964.80x = 329,316,138,842,982
  5. Step 5: Solve for x
    x = 329,316,138,842,982/20,403,964.80
  6. Step 6: Final answer
    x = 16,139,811.16

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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.