Home / 31,728.92-43,774.31-18,982.46

Finding the Fourth Proportional to 31,728.92, 43,774.31 and 18,982.46

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Solution

The fourth proportional to 31,728.92, 43,774.31 and 18,982.46 is: 26,188.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.92 : 43,774.31 = 18,982.46 : x
  2. Step 2: Convert to fraction form
    31,728.92/43,774.31 = 18,982.46/x
  3. Step 3: Cross multiply
    31,728.92x = 43,774.31 × 18,982.46
  4. Step 4: Simplify right side
    31,728.92x = 830,944,088.60
  5. Step 5: Solve for x
    x = 830,944,088.60/31,728.92
  6. Step 6: Final answer
    x = 26,188.86

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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.