Home / 20,520.33-30,844.71-13,545.18

Finding the Fourth Proportional to 20,520.33, 30,844.71 and 13,545.18

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Solution

The fourth proportional to 20,520.33, 30,844.71 and 13,545.18 is: 20,360.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520.33 : 30,844.71 = 13,545.18 : x
  2. Step 2: Convert to fraction form
    20,520.33/30,844.71 = 13,545.18/x
  3. Step 3: Cross multiply
    20,520.33x = 30,844.71 × 13,545.18
  4. Step 4: Simplify right side
    20,520.33x = 417,797,149.00
  5. Step 5: Solve for x
    x = 417,797,149.00/20,520.33
  6. Step 6: Final answer
    x = 20,360.16

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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.