Home / 21,195.32-29,251.88-13,545.65

Finding the Fourth Proportional to 21,195.32, 29,251.88 and 13,545.65

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Solution

The fourth proportional to 21,195.32, 29,251.88 and 13,545.65 is: 18,694.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195.32 : 29,251.88 = 13,545.65 : x
  2. Step 2: Convert to fraction form
    21,195.32/29,251.88 = 13,545.65/x
  3. Step 3: Cross multiply
    21,195.32x = 29,251.88 × 13,545.65
  4. Step 4: Simplify right side
    21,195.32x = 396,235,728.32
  5. Step 5: Solve for x
    x = 396,235,728.32/21,195.32
  6. Step 6: Final answer
    x = 18,694.49

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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.