Home / 17,731.28-26,488.42-12,758.48

Finding the Fourth Proportional to 17,731.28, 26,488.42 and 12,758.48

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Solution

The fourth proportional to 17,731.28, 26,488.42 and 12,758.48 is: 19,059.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,731.28 : 26,488.42 = 12,758.48 : x
  2. Step 2: Convert to fraction form
    17,731.28/26,488.42 = 12,758.48/x
  3. Step 3: Cross multiply
    17,731.28x = 26,488.42 × 12,758.48
  4. Step 4: Simplify right side
    17,731.28x = 337,951,976.80
  5. Step 5: Solve for x
    x = 337,951,976.80/17,731.28
  6. Step 6: Final answer
    x = 19,059.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.