Home / 31,552.11-43,522.59-20,217.78

Finding the Fourth Proportional to 31,552.11, 43,522.59 and 20,217.78

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Solution

The fourth proportional to 31,552.11, 43,522.59 and 20,217.78 is: 27,888.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,552.11 : 43,522.59 = 20,217.78 : x
  2. Step 2: Convert to fraction form
    31,552.11/43,522.59 = 20,217.78/x
  3. Step 3: Cross multiply
    31,552.11x = 43,522.59 × 20,217.78
  4. Step 4: Simplify right side
    31,552.11x = 879,930,149.65
  5. Step 5: Solve for x
    x = 879,930,149.65/31,552.11
  6. Step 6: Final answer
    x = 27,888.16

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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.