Home / 38,446.97-57,688.88-20,916.79

Finding the Fourth Proportional to 38,446.97, 57,688.88 and 20,916.79

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Solution

The fourth proportional to 38,446.97, 57,688.88 and 20,916.79 is: 31,385.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,446.97 : 57,688.88 = 20,916.79 : x
  2. Step 2: Convert to fraction form
    38,446.97/57,688.88 = 20,916.79/x
  3. Step 3: Cross multiply
    38,446.97x = 57,688.88 × 20,916.79
  4. Step 4: Simplify right side
    38,446.97x = 1,206,665,939.49
  5. Step 5: Solve for x
    x = 1,206,665,939.49/38,446.97
  6. Step 6: Final answer
    x = 31,385.21

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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.