Home / 19,990.38-27,585.42-11,037.80

Finding the Fourth Proportional to 19,990.38, 27,585.42 and 11,037.80

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Solution

The fourth proportional to 19,990.38, 27,585.42 and 11,037.80 is: 15,231.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,990.38 : 27,585.42 = 11,037.80 : x
  2. Step 2: Convert to fraction form
    19,990.38/27,585.42 = 11,037.80/x
  3. Step 3: Cross multiply
    19,990.38x = 27,585.42 × 11,037.80
  4. Step 4: Simplify right side
    19,990.38x = 304,482,348.88
  5. Step 5: Solve for x
    x = 304,482,348.88/19,990.38
  6. Step 6: Final answer
    x = 15,231.44

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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.