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Finding the Fourth Proportional to 12,635.52, 18,941.76 and 9,179.52

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Solution

The fourth proportional to 12,635.52, 18,941.76 and 9,179.52 is: 13,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.52 : 18,941.76 = 9,179.52 : x
  2. Step 2: Convert to fraction form
    12,635.52/18,941.76 = 9,179.52/x
  3. Step 3: Cross multiply
    12,635.52x = 18,941.76 × 9,179.52
  4. Step 4: Simplify right side
    12,635.52x = 173,876,264.76
  5. Step 5: Solve for x
    x = 173,876,264.76/12,635.52
  6. Step 6: Final answer
    x = 13,760.91

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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.