Home / 18,665.46-27,998.19-5,518.86

Finding the Fourth Proportional to 18,665.46, 27,998.19 and 5,518.86

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Solution

The fourth proportional to 18,665.46, 27,998.19 and 5,518.86 is: 8,278.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.46 : 27,998.19 = 5,518.86 : x
  2. Step 2: Convert to fraction form
    18,665.46/27,998.19 = 5,518.86/x
  3. Step 3: Cross multiply
    18,665.46x = 27,998.19 × 5,518.86
  4. Step 4: Simplify right side
    18,665.46x = 154,518,090.86
  5. Step 5: Solve for x
    x = 154,518,090.86/18,665.46
  6. Step 6: Final answer
    x = 8,278.29

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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.