Home / 29,227.75-40,279.18-21,147.72

Finding the Fourth Proportional to 29,227.75, 40,279.18 and 21,147.72

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Solution

The fourth proportional to 29,227.75, 40,279.18 and 21,147.72 is: 29,143.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,227.75 : 40,279.18 = 21,147.72 : x
  2. Step 2: Convert to fraction form
    29,227.75/40,279.18 = 21,147.72/x
  3. Step 3: Cross multiply
    29,227.75x = 40,279.18 × 21,147.72
  4. Step 4: Simplify right side
    29,227.75x = 851,812,736.92
  5. Step 5: Solve for x
    x = 851,812,736.92/29,227.75
  6. Step 6: Final answer
    x = 29,143.98

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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.