Home / 22,247.40-30,648.60-15,520.80

Finding the Fourth Proportional to 22,247.40, 30,648.60 and 15,520.80

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Solution

The fourth proportional to 22,247.40, 30,648.60 and 15,520.80 is: 21,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,247.40 : 30,648.60 = 15,520.80 : x
  2. Step 2: Convert to fraction form
    22,247.40/30,648.60 = 15,520.80/x
  3. Step 3: Cross multiply
    22,247.40x = 30,648.60 × 15,520.80
  4. Step 4: Simplify right side
    22,247.40x = 475,690,790.88
  5. Step 5: Solve for x
    x = 475,690,790.88/22,247.40
  6. Step 6: Final answer
    x = 21,381.86

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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.