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Finding the Fourth Proportional to 16,631.80, 22,949.94 and 9,917.80

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Solution

The fourth proportional to 16,631.80, 22,949.94 and 9,917.80 is: 13,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,631.80 : 22,949.94 = 9,917.80 : x
  2. Step 2: Convert to fraction form
    16,631.80/22,949.94 = 9,917.80/x
  3. Step 3: Cross multiply
    16,631.80x = 22,949.94 × 9,917.80
  4. Step 4: Simplify right side
    16,631.80x = 227,612,914.93
  5. Step 5: Solve for x
    x = 227,612,914.93/16,631.80
  6. Step 6: Final answer
    x = 13,685.40

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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.