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Finding the Fourth Proportional to 18,660.84, 25,757.10 and 12,702.48

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Solution

The fourth proportional to 18,660.84, 25,757.10 and 12,702.48 is: 17,532.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,660.84 : 25,757.10 = 12,702.48 : x
  2. Step 2: Convert to fraction form
    18,660.84/25,757.10 = 12,702.48/x
  3. Step 3: Cross multiply
    18,660.84x = 25,757.10 × 12,702.48
  4. Step 4: Simplify right side
    18,660.84x = 327,179,047.61
  5. Step 5: Solve for x
    x = 327,179,047.61/18,660.84
  6. Step 6: Final answer
    x = 17,532.92

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1.5x scale

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.