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Finding the Fourth Proportional to 15,186.88, 22,757.64 and 12,432.88

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Solution

The fourth proportional to 15,186.88, 22,757.64 and 12,432.88 is: 18,630.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,186.88 : 22,757.64 = 12,432.88 : x
  2. Step 2: Convert to fraction form
    15,186.88/22,757.64 = 12,432.88/x
  3. Step 3: Cross multiply
    15,186.88x = 22,757.64 × 12,432.88
  4. Step 4: Simplify right side
    15,186.88x = 282,943,007.20
  5. Step 5: Solve for x
    x = 282,943,007.20/15,186.88
  6. Step 6: Final answer
    x = 18,630.75

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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.