Home / 20,422.60-28,187.58-12,463.12

Finding the Fourth Proportional to 20,422.60, 28,187.58 and 12,463.12

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Solution

The fourth proportional to 20,422.60, 28,187.58 and 12,463.12 is: 17,201.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.60 : 28,187.58 = 12,463.12 : x
  2. Step 2: Convert to fraction form
    20,422.60/28,187.58 = 12,463.12/x
  3. Step 3: Cross multiply
    20,422.60x = 28,187.58 × 12,463.12
  4. Step 4: Simplify right side
    20,422.60x = 351,305,192.05
  5. Step 5: Solve for x
    x = 351,305,192.05/20,422.60
  6. Step 6: Final answer
    x = 17,201.79

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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.