Home / 31,660.74-47,471.94-21,789.18

Finding the Fourth Proportional to 31,660.74, 47,471.94 and 21,789.18

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Solution

The fourth proportional to 31,660.74, 47,471.94 and 21,789.18 is: 32,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,660.74 : 47,471.94 = 21,789.18 : x
  2. Step 2: Convert to fraction form
    31,660.74/47,471.94 = 21,789.18/x
  3. Step 3: Cross multiply
    31,660.74x = 47,471.94 × 21,789.18
  4. Step 4: Simplify right side
    31,660.74x = 1,034,374,645.61
  5. Step 5: Solve for x
    x = 1,034,374,645.61/31,660.74
  6. Step 6: Final answer
    x = 32,670.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.