Home / 22,549.82-31,125-13,120.20

Finding the Fourth Proportional to 22,549.82, 31,125 and 13,120.20

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Solution

The fourth proportional to 22,549.82, 31,125 and 13,120.20 is: 18,109.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,549.82 : 31,125 = 13,120.20 : x
  2. Step 2: Convert to fraction form
    22,549.82/31,125 = 13,120.20/x
  3. Step 3: Cross multiply
    22,549.82x = 31,125 × 13,120.20
  4. Step 4: Simplify right side
    22,549.82x = 408,366,225
  5. Step 5: Solve for x
    x = 408,366,225/22,549.82
  6. Step 6: Final answer
    x = 18,109.52

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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.