Home / 25,787.70-38,721.15-14,123.70

Finding the Fourth Proportional to 25,787.70, 38,721.15 and 14,123.70

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Solution

The fourth proportional to 25,787.70, 38,721.15 and 14,123.70 is: 21,207.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,787.70 : 38,721.15 = 14,123.70 : x
  2. Step 2: Convert to fraction form
    25,787.70/38,721.15 = 14,123.70/x
  3. Step 3: Cross multiply
    25,787.70x = 38,721.15 × 14,123.70
  4. Step 4: Simplify right side
    25,787.70x = 546,885,906.26
  5. Step 5: Solve for x
    x = 546,885,906.26/25,787.70
  6. Step 6: Final answer
    x = 21,207.24

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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.