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Finding the Fourth Proportional to 19,951,462.80, 29,891,764.80 and 18,676,004.40

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Solution

The fourth proportional to 19,951,462.80, 29,891,764.80 and 18,676,004.40 is: 27,980,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,951,462.80 : 29,891,764.80 = 18,676,004.40 : x
  2. Step 2: Convert to fraction form
    19,951,462.80/29,891,764.80 = 18,676,004.40/x
  3. Step 3: Cross multiply
    19,951,462.80x = 29,891,764.80 × 18,676,004.40
  4. Step 4: Simplify right side
    19,951,462.80x = 558,258,730,928,565.06
  5. Step 5: Solve for x
    x = 558,258,730,928,565.06/19,951,462.80
  6. Step 6: Final answer
    x = 27,980,842.13

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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.