Home / 13,581.69-20,370.17-3,718.62

Finding the Fourth Proportional to 13,581.69, 20,370.17 and 3,718.62

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Solution

The fourth proportional to 13,581.69, 20,370.17 and 3,718.62 is: 5,577.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.69 : 20,370.17 = 3,718.62 : x
  2. Step 2: Convert to fraction form
    13,581.69/20,370.17 = 3,718.62/x
  3. Step 3: Cross multiply
    13,581.69x = 20,370.17 × 3,718.62
  4. Step 4: Simplify right side
    13,581.69x = 75,748,902.97
  5. Step 5: Solve for x
    x = 75,748,902.97/13,581.69
  6. Step 6: Final answer
    x = 5,577.28

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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.