Home / 20,132.62-30,164.82-12,325.12

Finding the Fourth Proportional to 20,132.62, 30,164.82 and 12,325.12

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Solution

The fourth proportional to 20,132.62, 30,164.82 and 12,325.12 is: 18,466.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.62 : 30,164.82 = 12,325.12 : x
  2. Step 2: Convert to fraction form
    20,132.62/30,164.82 = 12,325.12/x
  3. Step 3: Cross multiply
    20,132.62x = 30,164.82 × 12,325.12
  4. Step 4: Simplify right side
    20,132.62x = 371,785,026.28
  5. Step 5: Solve for x
    x = 371,785,026.28/20,132.62
  6. Step 6: Final answer
    x = 18,466.80

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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.