Home / 20,414.35-28,171.90-11,461.70

Finding the Fourth Proportional to 20,414.35, 28,171.90 and 11,461.70

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Solution

The fourth proportional to 20,414.35, 28,171.90 and 11,461.70 is: 15,817.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.35 : 28,171.90 = 11,461.70 : x
  2. Step 2: Convert to fraction form
    20,414.35/28,171.90 = 11,461.70/x
  3. Step 3: Cross multiply
    20,414.35x = 28,171.90 × 11,461.70
  4. Step 4: Simplify right side
    20,414.35x = 322,897,950.99
  5. Step 5: Solve for x
    x = 322,897,950.99/20,414.35
  6. Step 6: Final answer
    x = 15,817.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.