Home / 18,922.56-28,398.96-11,137.92

Finding the Fourth Proportional to 18,922.56, 28,398.96 and 11,137.92

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Solution

The fourth proportional to 18,922.56, 28,398.96 and 11,137.92 is: 16,715.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.56 : 28,398.96 = 11,137.92 : x
  2. Step 2: Convert to fraction form
    18,922.56/28,398.96 = 11,137.92/x
  3. Step 3: Cross multiply
    18,922.56x = 28,398.96 × 11,137.92
  4. Step 4: Simplify right side
    18,922.56x = 316,305,344.56
  5. Step 5: Solve for x
    x = 316,305,344.56/18,922.56
  6. Step 6: Final answer
    x = 16,715.78

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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.