Home / 20,758.16-31,142.22-5,966.78

Finding the Fourth Proportional to 20,758.16, 31,142.22 and 5,966.78

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Solution

The fourth proportional to 20,758.16, 31,142.22 and 5,966.78 is: 8,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.16 : 31,142.22 = 5,966.78 : x
  2. Step 2: Convert to fraction form
    20,758.16/31,142.22 = 5,966.78/x
  3. Step 3: Cross multiply
    20,758.16x = 31,142.22 × 5,966.78
  4. Step 4: Simplify right side
    20,758.16x = 185,818,775.45
  5. Step 5: Solve for x
    x = 185,818,775.45/20,758.16
  6. Step 6: Final answer
    x = 8,951.60

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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.