Home / 20,108.16-30,162.24-18,449.28

Finding the Fourth Proportional to 20,108.16, 30,162.24 and 18,449.28

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Solution

The fourth proportional to 20,108.16, 30,162.24 and 18,449.28 is: 27,673.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.16 : 30,162.24 = 18,449.28 : x
  2. Step 2: Convert to fraction form
    20,108.16/30,162.24 = 18,449.28/x
  3. Step 3: Cross multiply
    20,108.16x = 30,162.24 × 18,449.28
  4. Step 4: Simplify right side
    20,108.16x = 556,471,611.19
  5. Step 5: Solve for x
    x = 556,471,611.19/20,108.16
  6. Step 6: Final answer
    x = 27,673.92

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Similar ratio
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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.