Home / 18,387.32-27,585.30-5,239.88

Finding the Fourth Proportional to 18,387.32, 27,585.30 and 5,239.88

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Solution

The fourth proportional to 18,387.32, 27,585.30 and 5,239.88 is: 7,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.32 : 27,585.30 = 5,239.88 : x
  2. Step 2: Convert to fraction form
    18,387.32/27,585.30 = 5,239.88/x
  3. Step 3: Cross multiply
    18,387.32x = 27,585.30 × 5,239.88
  4. Step 4: Simplify right side
    18,387.32x = 144,543,661.76
  5. Step 5: Solve for x
    x = 144,543,661.76/18,387.32
  6. Step 6: Final answer
    x = 7,861.05

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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.