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Finding the Fourth Proportional to 16,787.31, 25,189.78 and 7,433.79

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Solution

The fourth proportional to 16,787.31, 25,189.78 and 7,433.79 is: 11,154.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,787.31 : 25,189.78 = 7,433.79 : x
  2. Step 2: Convert to fraction form
    16,787.31/25,189.78 = 7,433.79/x
  3. Step 3: Cross multiply
    16,787.31x = 25,189.78 × 7,433.79
  4. Step 4: Simplify right side
    16,787.31x = 187,255,534.67
  5. Step 5: Solve for x
    x = 187,255,534.67/16,787.31
  6. Step 6: Final answer
    x = 11,154.59

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1.5x scale

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.