Home / 20,108.61-30,162.92-13,777.24

Finding the Fourth Proportional to 20,108.61, 30,162.92 and 13,777.24

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Solution

The fourth proportional to 20,108.61, 30,162.92 and 13,777.24 is: 20,665.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.61 : 30,162.92 = 13,777.24 : x
  2. Step 2: Convert to fraction form
    20,108.61/30,162.92 = 13,777.24/x
  3. Step 3: Cross multiply
    20,108.61x = 30,162.92 × 13,777.24
  4. Step 4: Simplify right side
    20,108.61x = 415,561,787.94
  5. Step 5: Solve for x
    x = 415,561,787.94/20,108.61
  6. Step 6: Final answer
    x = 20,665.86

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Double scale
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Similar ratio
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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.