Home / 13,542.15-20,310.89-3,680.13

Finding the Fourth Proportional to 13,542.15, 20,310.89 and 3,680.13

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Solution

The fourth proportional to 13,542.15, 20,310.89 and 3,680.13 is: 5,519.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.15 : 20,310.89 = 3,680.13 : x
  2. Step 2: Convert to fraction form
    13,542.15/20,310.89 = 3,680.13/x
  3. Step 3: Cross multiply
    13,542.15x = 20,310.89 × 3,680.13
  4. Step 4: Simplify right side
    13,542.15x = 74,746,697.22
  5. Step 5: Solve for x
    x = 74,746,697.22/13,542.15
  6. Step 6: Final answer
    x = 5,519.56

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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.