Home / 18,269.20-27,399.48-7,875.28

Finding the Fourth Proportional to 18,269.20, 27,399.48 and 7,875.28

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Solution

The fourth proportional to 18,269.20, 27,399.48 and 7,875.28 is: 11,811.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.20 : 27,399.48 = 7,875.28 : x
  2. Step 2: Convert to fraction form
    18,269.20/27,399.48 = 7,875.28/x
  3. Step 3: Cross multiply
    18,269.20x = 27,399.48 × 7,875.28
  4. Step 4: Simplify right side
    18,269.20x = 215,778,576.85
  5. Step 5: Solve for x
    x = 215,778,576.85/18,269.20
  6. Step 6: Final answer
    x = 11,811.06

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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.