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Finding the Fourth Proportional to 17,191.60, 25,787.40 and 15,312.40

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Solution

The fourth proportional to 17,191.60, 25,787.40 and 15,312.40 is: 22,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,191.60 : 25,787.40 = 15,312.40 : x
  2. Step 2: Convert to fraction form
    17,191.60/25,787.40 = 15,312.40/x
  3. Step 3: Cross multiply
    17,191.60x = 25,787.40 × 15,312.40
  4. Step 4: Simplify right side
    17,191.60x = 394,866,983.76
  5. Step 5: Solve for x
    x = 394,866,983.76/17,191.60
  6. Step 6: Final answer
    x = 22,968.60

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Similar ratio
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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.