Home / 12,480.42-18,721.38-3,714.60

Finding the Fourth Proportional to 12,480.42, 18,721.38 and 3,714.60

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Solution

The fourth proportional to 12,480.42, 18,721.38 and 3,714.60 is: 5,572.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.42 : 18,721.38 = 3,714.60 : x
  2. Step 2: Convert to fraction form
    12,480.42/18,721.38 = 3,714.60/x
  3. Step 3: Cross multiply
    12,480.42x = 18,721.38 × 3,714.60
  4. Step 4: Simplify right side
    12,480.42x = 69,542,438.15
  5. Step 5: Solve for x
    x = 69,542,438.15/12,480.42
  6. Step 6: Final answer
    x = 5,572.12

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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.