Home / 22,290.92-30,761.40-12,219.78

Finding the Fourth Proportional to 22,290.92, 30,761.40 and 12,219.78

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Solution

The fourth proportional to 22,290.92, 30,761.40 and 12,219.78 is: 16,863.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,290.92 : 30,761.40 = 12,219.78 : x
  2. Step 2: Convert to fraction form
    22,290.92/30,761.40 = 12,219.78/x
  3. Step 3: Cross multiply
    22,290.92x = 30,761.40 × 12,219.78
  4. Step 4: Simplify right side
    22,290.92x = 375,897,540.49
  5. Step 5: Solve for x
    x = 375,897,540.49/22,290.92
  6. Step 6: Final answer
    x = 16,863.26

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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.