Home / 28,248,945.72-38,982,217.20-15,690,814.92

Finding the Fourth Proportional to 28,248,945.72, 38,982,217.20 and 15,690,814.92

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Solution

The fourth proportional to 28,248,945.72, 38,982,217.20 and 15,690,814.92 is: 21,652,587.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,248,945.72 : 38,982,217.20 = 15,690,814.92 : x
  2. Step 2: Convert to fraction form
    28,248,945.72/38,982,217.20 = 15,690,814.92/x
  3. Step 3: Cross multiply
    28,248,945.72x = 38,982,217.20 × 15,690,814.92
  4. Step 4: Simplify right side
    28,248,945.72x = 611,662,755,256,440.62
  5. Step 5: Solve for x
    x = 611,662,755,256,440.62/28,248,945.72
  6. Step 6: Final answer
    x = 21,652,587.01

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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.