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Finding the Fourth Proportional to 16,988.86, 25,471.66 and 8,652.74

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Solution

The fourth proportional to 16,988.86, 25,471.66 and 8,652.74 is: 12,973.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,988.86 : 25,471.66 = 8,652.74 : x
  2. Step 2: Convert to fraction form
    16,988.86/25,471.66 = 8,652.74/x
  3. Step 3: Cross multiply
    16,988.86x = 25,471.66 × 8,652.74
  4. Step 4: Simplify right side
    16,988.86x = 220,399,651.35
  5. Step 5: Solve for x
    x = 220,399,651.35/16,988.86
  6. Step 6: Final answer
    x = 12,973.19

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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.