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Finding the Fourth Proportional to 16,688.64, 23,029.92 and 9,134.88

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Solution

The fourth proportional to 16,688.64, 23,029.92 and 9,134.88 is: 12,605.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,688.64 : 23,029.92 = 9,134.88 : x
  2. Step 2: Convert to fraction form
    16,688.64/23,029.92 = 9,134.88/x
  3. Step 3: Cross multiply
    16,688.64x = 23,029.92 × 9,134.88
  4. Step 4: Simplify right side
    16,688.64x = 210,375,555.61
  5. Step 5: Solve for x
    x = 210,375,555.61/16,688.64
  6. Step 6: Final answer
    x = 12,605.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.