Home / 20,132.30-30,188.66-8,442.38

Finding the Fourth Proportional to 20,132.30, 30,188.66 and 8,442.38

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Solution

The fourth proportional to 20,132.30, 30,188.66 and 8,442.38 is: 12,659.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.30 : 30,188.66 = 8,442.38 : x
  2. Step 2: Convert to fraction form
    20,132.30/30,188.66 = 8,442.38/x
  3. Step 3: Cross multiply
    20,132.30x = 30,188.66 × 8,442.38
  4. Step 4: Simplify right side
    20,132.30x = 254,864,139.41
  5. Step 5: Solve for x
    x = 254,864,139.41/20,132.30
  6. Step 6: Final answer
    x = 12,659.46

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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.