Home / 31,755.20-43,819.01-18,330.78

Finding the Fourth Proportional to 31,755.20, 43,819.01 and 18,330.78

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Solution

The fourth proportional to 31,755.20, 43,819.01 and 18,330.78 is: 25,294.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,755.20 : 43,819.01 = 18,330.78 : x
  2. Step 2: Convert to fraction form
    31,755.20/43,819.01 = 18,330.78/x
  3. Step 3: Cross multiply
    31,755.20x = 43,819.01 × 18,330.78
  4. Step 4: Simplify right side
    31,755.20x = 803,236,727.63
  5. Step 5: Solve for x
    x = 803,236,727.63/31,755.20
  6. Step 6: Final answer
    x = 25,294.65

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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.