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Finding the Fourth Proportional to 12,887.57, 17,793.41 and 9,898.06

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Solution

The fourth proportional to 12,887.57, 17,793.41 and 9,898.06 is: 13,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.57 : 17,793.41 = 9,898.06 : x
  2. Step 2: Convert to fraction form
    12,887.57/17,793.41 = 9,898.06/x
  3. Step 3: Cross multiply
    12,887.57x = 17,793.41 × 9,898.06
  4. Step 4: Simplify right side
    12,887.57x = 176,120,286.77
  5. Step 5: Solve for x
    x = 176,120,286.77/12,887.57
  6. Step 6: Final answer
    x = 13,665.90

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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.