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Finding the Fourth Proportional to 11,432.88, 17,127.72 and 8,662.68

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Solution

The fourth proportional to 11,432.88, 17,127.72 and 8,662.68 is: 12,977.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,432.88 : 17,127.72 = 8,662.68 : x
  2. Step 2: Convert to fraction form
    11,432.88/17,127.72 = 8,662.68/x
  3. Step 3: Cross multiply
    11,432.88x = 17,127.72 × 8,662.68
  4. Step 4: Simplify right side
    11,432.88x = 148,371,957.49
  5. Step 5: Solve for x
    x = 148,371,957.49/11,432.88
  6. Step 6: Final answer
    x = 12,977.65

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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.