Home / 31,528.12-43,508.78-17,381.20

Finding the Fourth Proportional to 31,528.12, 43,508.78 and 17,381.20

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Solution

The fourth proportional to 31,528.12, 43,508.78 and 17,381.20 is: 23,986.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,528.12 : 43,508.78 = 17,381.20 : x
  2. Step 2: Convert to fraction form
    31,528.12/43,508.78 = 17,381.20/x
  3. Step 3: Cross multiply
    31,528.12x = 43,508.78 × 17,381.20
  4. Step 4: Simplify right side
    31,528.12x = 756,234,806.94
  5. Step 5: Solve for x
    x = 756,234,806.94/31,528.12
  6. Step 6: Final answer
    x = 23,986.04

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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.