Home / 18,826.56-28,230.12-7,731.18

Finding the Fourth Proportional to 18,826.56, 28,230.12 and 7,731.18

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Solution

The fourth proportional to 18,826.56, 28,230.12 and 7,731.18 is: 11,592.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,826.56 : 28,230.12 = 7,731.18 : x
  2. Step 2: Convert to fraction form
    18,826.56/28,230.12 = 7,731.18/x
  3. Step 3: Cross multiply
    18,826.56x = 28,230.12 × 7,731.18
  4. Step 4: Simplify right side
    18,826.56x = 218,252,139.14
  5. Step 5: Solve for x
    x = 218,252,139.14/18,826.56
  6. Step 6: Final answer
    x = 11,592.78

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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.