Home / 18,665.46-28,001.22-5,519.16

Finding the Fourth Proportional to 18,665.46, 28,001.22 and 5,519.16

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Solution

The fourth proportional to 18,665.46, 28,001.22 and 5,519.16 is: 8,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,665.46 : 28,001.22 = 5,519.16 : x
  2. Step 2: Convert to fraction form
    18,665.46/28,001.22 = 5,519.16/x
  3. Step 3: Cross multiply
    18,665.46x = 28,001.22 × 5,519.16
  4. Step 4: Simplify right side
    18,665.46x = 154,543,213.38
  5. Step 5: Solve for x
    x = 154,543,213.38/18,665.46
  6. Step 6: Final answer
    x = 8,279.64

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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.