Home / 31,382.34-43,289.55-18,799.80

Finding the Fourth Proportional to 31,382.34, 43,289.55 and 18,799.80

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Solution

The fourth proportional to 31,382.34, 43,289.55 and 18,799.80 is: 25,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,382.34 : 43,289.55 = 18,799.80 : x
  2. Step 2: Convert to fraction form
    31,382.34/43,289.55 = 18,799.80/x
  3. Step 3: Cross multiply
    31,382.34x = 43,289.55 × 18,799.80
  4. Step 4: Simplify right side
    31,382.34x = 813,834,882.09
  5. Step 5: Solve for x
    x = 813,834,882.09/31,382.34
  6. Step 6: Final answer
    x = 25,932.89

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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.