Home / 23,121.92-34,515.64-20,319.42

Finding the Fourth Proportional to 23,121.92, 34,515.64 and 20,319.42

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Solution

The fourth proportional to 23,121.92, 34,515.64 and 20,319.42 is: 30,332.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,121.92 : 34,515.64 = 20,319.42 : x
  2. Step 2: Convert to fraction form
    23,121.92/34,515.64 = 20,319.42/x
  3. Step 3: Cross multiply
    23,121.92x = 34,515.64 × 20,319.42
  4. Step 4: Simplify right side
    23,121.92x = 701,337,785.73
  5. Step 5: Solve for x
    x = 701,337,785.73/23,121.92
  6. Step 6: Final answer
    x = 30,332.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.