Home / 29,286.32-40,414.80-15,857.20

Finding the Fourth Proportional to 29,286.32, 40,414.80 and 15,857.20

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Solution

The fourth proportional to 29,286.32, 40,414.80 and 15,857.20 is: 21,882.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,286.32 : 40,414.80 = 15,857.20 : x
  2. Step 2: Convert to fraction form
    29,286.32/40,414.80 = 15,857.20/x
  3. Step 3: Cross multiply
    29,286.32x = 40,414.80 × 15,857.20
  4. Step 4: Simplify right side
    29,286.32x = 640,865,566.56
  5. Step 5: Solve for x
    x = 640,865,566.56/29,286.32
  6. Step 6: Final answer
    x = 21,882.76

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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.