Home / 18,108.32-27,170.22-10,216.76

Finding the Fourth Proportional to 18,108.32, 27,170.22 and 10,216.76

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Solution

The fourth proportional to 18,108.32, 27,170.22 and 10,216.76 is: 15,329.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.32 : 27,170.22 = 10,216.76 : x
  2. Step 2: Convert to fraction form
    18,108.32/27,170.22 = 10,216.76/x
  3. Step 3: Cross multiply
    18,108.32x = 27,170.22 × 10,216.76
  4. Step 4: Simplify right side
    18,108.32x = 277,591,616.89
  5. Step 5: Solve for x
    x = 277,591,616.89/18,108.32
  6. Step 6: Final answer
    x = 15,329.51

Related Problems

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Half scale
Find fourth proportional to 36,216.64, 54,340.44 and 20,433.52
Double scale
Find fourth proportional to 18,109.32, 27,171.72 and 10,217.76
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.