Home / 28,444.38-42,689.82-20,132.49

Finding the Fourth Proportional to 28,444.38, 42,689.82 and 20,132.49

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Solution

The fourth proportional to 28,444.38, 42,689.82 and 20,132.49 is: 30,215.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,444.38 : 42,689.82 = 20,132.49 : x
  2. Step 2: Convert to fraction form
    28,444.38/42,689.82 = 20,132.49/x
  3. Step 3: Cross multiply
    28,444.38x = 42,689.82 × 20,132.49
  4. Step 4: Simplify right side
    28,444.38x = 859,452,374.25
  5. Step 5: Solve for x
    x = 859,452,374.25/28,444.38
  6. Step 6: Final answer
    x = 30,215.19

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1.5x scale

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.