Home / 31,684.61-43,711.13-18,247.88

Finding the Fourth Proportional to 31,684.61, 43,711.13 and 18,247.88

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Solution

The fourth proportional to 31,684.61, 43,711.13 and 18,247.88 is: 25,174.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,684.61 : 43,711.13 = 18,247.88 : x
  2. Step 2: Convert to fraction form
    31,684.61/43,711.13 = 18,247.88/x
  3. Step 3: Cross multiply
    31,684.61x = 43,711.13 × 18,247.88
  4. Step 4: Simplify right side
    31,684.61x = 797,635,145.11
  5. Step 5: Solve for x
    x = 797,635,145.11/31,684.61
  6. Step 6: Final answer
    x = 25,174.21

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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.