Home / 28,372.68-42,540.74-13,581.24

Finding the Fourth Proportional to 28,372.68, 42,540.74 and 13,581.24

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Solution

The fourth proportional to 28,372.68, 42,540.74 and 13,581.24 is: 20,363.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,372.68 : 42,540.74 = 13,581.24 : x
  2. Step 2: Convert to fraction form
    28,372.68/42,540.74 = 13,581.24/x
  3. Step 3: Cross multiply
    28,372.68x = 42,540.74 × 13,581.24
  4. Step 4: Simplify right side
    28,372.68x = 577,755,999.72
  5. Step 5: Solve for x
    x = 577,755,999.72/28,372.68
  6. Step 6: Final answer
    x = 20,363.11

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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.