Home / 20,398.06-30,572.49-10,531.96

Finding the Fourth Proportional to 20,398.06, 30,572.49 and 10,531.96

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Solution

The fourth proportional to 20,398.06, 30,572.49 and 10,531.96 is: 15,785.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.06 : 30,572.49 = 10,531.96 : x
  2. Step 2: Convert to fraction form
    20,398.06/30,572.49 = 10,531.96/x
  3. Step 3: Cross multiply
    20,398.06x = 30,572.49 × 10,531.96
  4. Step 4: Simplify right side
    20,398.06x = 321,988,241.78
  5. Step 5: Solve for x
    x = 321,988,241.78/20,398.06
  6. Step 6: Final answer
    x = 15,785.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.