Home / 18,932.43-28,377.12-11,520.57

Finding the Fourth Proportional to 18,932.43, 28,377.12 and 11,520.57

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Solution

The fourth proportional to 18,932.43, 28,377.12 and 11,520.57 is: 17,267.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,932.43 : 28,377.12 = 11,520.57 : x
  2. Step 2: Convert to fraction form
    18,932.43/28,377.12 = 11,520.57/x
  3. Step 3: Cross multiply
    18,932.43x = 28,377.12 × 11,520.57
  4. Step 4: Simplify right side
    18,932.43x = 326,920,597.36
  5. Step 5: Solve for x
    x = 326,920,597.36/18,932.43
  6. Step 6: Final answer
    x = 17,267.76

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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.