Home / 29,257.20-40,331.16-21,286.80

Finding the Fourth Proportional to 29,257.20, 40,331.16 and 21,286.80

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Solution

The fourth proportional to 29,257.20, 40,331.16 and 21,286.80 is: 29,343.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,257.20 : 40,331.16 = 21,286.80 : x
  2. Step 2: Convert to fraction form
    29,257.20/40,331.16 = 21,286.80/x
  3. Step 3: Cross multiply
    29,257.20x = 40,331.16 × 21,286.80
  4. Step 4: Simplify right side
    29,257.20x = 858,521,336.69
  5. Step 5: Solve for x
    x = 858,521,336.69/29,257.20
  6. Step 6: Final answer
    x = 29,343.93

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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.