Home / 22,280.22-30,758.13-15,147.90

Finding the Fourth Proportional to 22,280.22, 30,758.13 and 15,147.90

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Solution

The fourth proportional to 22,280.22, 30,758.13 and 15,147.90 is: 20,911.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,280.22 : 30,758.13 = 15,147.90 : x
  2. Step 2: Convert to fraction form
    22,280.22/30,758.13 = 15,147.90/x
  3. Step 3: Cross multiply
    22,280.22x = 30,758.13 × 15,147.90
  4. Step 4: Simplify right side
    22,280.22x = 465,921,077.43
  5. Step 5: Solve for x
    x = 465,921,077.43/22,280.22
  6. Step 6: Final answer
    x = 20,911.87

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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.