Home / 22,861.68-31,531.66-19,680.20

Finding the Fourth Proportional to 22,861.68, 31,531.66 and 19,680.20

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Solution

The fourth proportional to 22,861.68, 31,531.66 and 19,680.20 is: 27,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,861.68 : 31,531.66 = 19,680.20 : x
  2. Step 2: Convert to fraction form
    22,861.68/31,531.66 = 19,680.20/x
  3. Step 3: Cross multiply
    22,861.68x = 31,531.66 × 19,680.20
  4. Step 4: Simplify right side
    22,861.68x = 620,549,375.13
  5. Step 5: Solve for x
    x = 620,549,375.13/22,861.68
  6. Step 6: Final answer
    x = 27,143.65

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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.