Home / 20,158.56-30,175.92-18,257.76

Finding the Fourth Proportional to 20,158.56, 30,175.92 and 18,257.76

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Solution

The fourth proportional to 20,158.56, 30,175.92 and 18,257.76 is: 27,330.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,158.56 : 30,175.92 = 18,257.76 : x
  2. Step 2: Convert to fraction form
    20,158.56/30,175.92 = 18,257.76/x
  3. Step 3: Cross multiply
    20,158.56x = 30,175.92 × 18,257.76
  4. Step 4: Simplify right side
    20,158.56x = 550,944,705.14
  5. Step 5: Solve for x
    x = 550,944,705.14/20,158.56
  6. Step 6: Final answer
    x = 27,330.56

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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.