Home / 31,049.46-42,847.38-18,302.90

Finding the Fourth Proportional to 31,049.46, 42,847.38 and 18,302.90

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Solution

The fourth proportional to 31,049.46, 42,847.38 and 18,302.90 is: 25,257.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,049.46 : 42,847.38 = 18,302.90 : x
  2. Step 2: Convert to fraction form
    31,049.46/42,847.38 = 18,302.90/x
  3. Step 3: Cross multiply
    31,049.46x = 42,847.38 × 18,302.90
  4. Step 4: Simplify right side
    31,049.46x = 784,231,097.17
  5. Step 5: Solve for x
    x = 784,231,097.17/31,049.46
  6. Step 6: Final answer
    x = 25,257.48

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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.