Home / 18,263.13-27,399.15-5,115.30

Finding the Fourth Proportional to 18,263.13, 27,399.15 and 5,115.30

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Solution

The fourth proportional to 18,263.13, 27,399.15 and 5,115.30 is: 7,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263.13 : 27,399.15 = 5,115.30 : x
  2. Step 2: Convert to fraction form
    18,263.13/27,399.15 = 5,115.30/x
  3. Step 3: Cross multiply
    18,263.13x = 27,399.15 × 5,115.30
  4. Step 4: Simplify right side
    18,263.13x = 140,154,872.00
  5. Step 5: Solve for x
    x = 140,154,872.00/18,263.13
  6. Step 6: Final answer
    x = 7,674.20

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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.