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Finding the Fourth Proportional to 18,160.68, 25,043.76 and 11,082.90

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Solution

The fourth proportional to 18,160.68, 25,043.76 and 11,082.90 is: 15,283.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,160.68 : 25,043.76 = 11,082.90 : x
  2. Step 2: Convert to fraction form
    18,160.68/25,043.76 = 11,082.90/x
  3. Step 3: Cross multiply
    18,160.68x = 25,043.76 × 11,082.90
  4. Step 4: Simplify right side
    18,160.68x = 277,557,487.70
  5. Step 5: Solve for x
    x = 277,557,487.70/18,160.68
  6. Step 6: Final answer
    x = 15,283.43

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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.