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Finding the Fourth Proportional to 15,255.20, 22,882.80 and 12,951.20

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Solution

The fourth proportional to 15,255.20, 22,882.80 and 12,951.20 is: 19,426.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,255.20 : 22,882.80 = 12,951.20 : x
  2. Step 2: Convert to fraction form
    15,255.20/22,882.80 = 12,951.20/x
  3. Step 3: Cross multiply
    15,255.20x = 22,882.80 × 12,951.20
  4. Step 4: Simplify right side
    15,255.20x = 296,359,719.36
  5. Step 5: Solve for x
    x = 296,359,719.36/15,255.20
  6. Step 6: Final answer
    x = 19,426.80

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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.