Home / 22,551.62-31,121.30-12,480.76

Finding the Fourth Proportional to 22,551.62, 31,121.30 and 12,480.76

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Solution

The fourth proportional to 22,551.62, 31,121.30 and 12,480.76 is: 17,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,551.62 : 31,121.30 = 12,480.76 : x
  2. Step 2: Convert to fraction form
    22,551.62/31,121.30 = 12,480.76/x
  3. Step 3: Cross multiply
    22,551.62x = 31,121.30 × 12,480.76
  4. Step 4: Simplify right side
    22,551.62x = 388,417,382.78
  5. Step 5: Solve for x
    x = 388,417,382.78/22,551.62
  6. Step 6: Final answer
    x = 17,223.48

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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.