Home / 28,581.03-42,937.25-20,166.90

Finding the Fourth Proportional to 28,581.03, 42,937.25 and 20,166.90

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Solution

The fourth proportional to 28,581.03, 42,937.25 and 20,166.90 is: 30,296.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,581.03 : 42,937.25 = 20,166.90 : x
  2. Step 2: Convert to fraction form
    28,581.03/42,937.25 = 20,166.90/x
  3. Step 3: Cross multiply
    28,581.03x = 42,937.25 × 20,166.90
  4. Step 4: Simplify right side
    28,581.03x = 865,911,126.19
  5. Step 5: Solve for x
    x = 865,911,126.19/28,581.03
  6. Step 6: Final answer
    x = 30,296.71

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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.