Home / 31,728.40-43,787.88-17,585.68

Finding the Fourth Proportional to 31,728.40, 43,787.88 and 17,585.68

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Solution

The fourth proportional to 31,728.40, 43,787.88 and 17,585.68 is: 24,269.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,728.40 : 43,787.88 = 17,585.68 : x
  2. Step 2: Convert to fraction form
    31,728.40/43,787.88 = 17,585.68/x
  3. Step 3: Cross multiply
    31,728.40x = 43,787.88 × 17,585.68
  4. Step 4: Simplify right side
    31,728.40x = 770,039,645.56
  5. Step 5: Solve for x
    x = 770,039,645.56/31,728.40
  6. Step 6: Final answer
    x = 24,269.73

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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.