Home / 22,060.46-30,418.72-20,660.78

Finding the Fourth Proportional to 22,060.46, 30,418.72 and 20,660.78

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Solution

The fourth proportional to 22,060.46, 30,418.72 and 20,660.78 is: 28,488.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,060.46 : 30,418.72 = 20,660.78 : x
  2. Step 2: Convert to fraction form
    22,060.46/30,418.72 = 20,660.78/x
  3. Step 3: Cross multiply
    22,060.46x = 30,418.72 × 20,660.78
  4. Step 4: Simplify right side
    22,060.46x = 628,474,278.06
  5. Step 5: Solve for x
    x = 628,474,278.06/22,060.46
  6. Step 6: Final answer
    x = 28,488.73

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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.