Home / 18,479.40-27,723.20-5,330.75

Finding the Fourth Proportional to 18,479.40, 27,723.20 and 5,330.75

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Solution

The fourth proportional to 18,479.40, 27,723.20 and 5,330.75 is: 7,997.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,479.40 : 27,723.20 = 5,330.75 : x
  2. Step 2: Convert to fraction form
    18,479.40/27,723.20 = 5,330.75/x
  3. Step 3: Cross multiply
    18,479.40x = 27,723.20 × 5,330.75
  4. Step 4: Simplify right side
    18,479.40x = 147,785,448.40
  5. Step 5: Solve for x
    x = 147,785,448.40/18,479.40
  6. Step 6: Final answer
    x = 7,997.31

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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.