Home / 31,700.78-43,747.66-18,269.76

Finding the Fourth Proportional to 31,700.78, 43,747.66 and 18,269.76

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Solution

The fourth proportional to 31,700.78, 43,747.66 and 18,269.76 is: 25,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,700.78 : 43,747.66 = 18,269.76 : x
  2. Step 2: Convert to fraction form
    31,700.78/43,747.66 = 18,269.76/x
  3. Step 3: Cross multiply
    31,700.78x = 43,747.66 × 18,269.76
  4. Step 4: Simplify right side
    31,700.78x = 799,259,248.76
  5. Step 5: Solve for x
    x = 799,259,248.76/31,700.78
  6. Step 6: Final answer
    x = 25,212.61

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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.