Home / 13,680.61-20,517.27-3,818.16

Finding the Fourth Proportional to 13,680.61, 20,517.27 and 3,818.16

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Solution

The fourth proportional to 13,680.61, 20,517.27 and 3,818.16 is: 5,726.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.61 : 20,517.27 = 3,818.16 : x
  2. Step 2: Convert to fraction form
    13,680.61/20,517.27 = 3,818.16/x
  3. Step 3: Cross multiply
    13,680.61x = 20,517.27 × 3,818.16
  4. Step 4: Simplify right side
    13,680.61x = 78,338,219.62
  5. Step 5: Solve for x
    x = 78,338,219.62/13,680.61
  6. Step 6: Final answer
    x = 5,726.22

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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.