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Finding the Fourth Proportional to 16,489.61, 22,755.69 and 8,935.94

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Solution

The fourth proportional to 16,489.61, 22,755.69 and 8,935.94 is: 12,331.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,489.61 : 22,755.69 = 8,935.94 : x
  2. Step 2: Convert to fraction form
    16,489.61/22,755.69 = 8,935.94/x
  3. Step 3: Cross multiply
    16,489.61x = 22,755.69 × 8,935.94
  4. Step 4: Simplify right side
    16,489.61x = 203,343,480.50
  5. Step 5: Solve for x
    x = 203,343,480.50/16,489.61
  6. Step 6: Final answer
    x = 12,331.61

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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.