Home / 31,921.28-47,874.72-12,192.80

Finding the Fourth Proportional to 31,921.28, 47,874.72 and 12,192.80

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Solution

The fourth proportional to 31,921.28, 47,874.72 and 12,192.80 is: 18,286.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,921.28 : 47,874.72 = 12,192.80 : x
  2. Step 2: Convert to fraction form
    31,921.28/47,874.72 = 12,192.80/x
  3. Step 3: Cross multiply
    31,921.28x = 47,874.72 × 12,192.80
  4. Step 4: Simplify right side
    31,921.28x = 583,726,886.02
  5. Step 5: Solve for x
    x = 583,726,886.02/31,921.28
  6. Step 6: Final answer
    x = 18,286.45

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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.