Home / 18,387.36-27,581.92-5,240.64

Finding the Fourth Proportional to 18,387.36, 27,581.92 and 5,240.64

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Solution

The fourth proportional to 18,387.36, 27,581.92 and 5,240.64 is: 7,861.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.36 : 27,581.92 = 5,240.64 : x
  2. Step 2: Convert to fraction form
    18,387.36/27,581.92 = 5,240.64/x
  3. Step 3: Cross multiply
    18,387.36x = 27,581.92 × 5,240.64
  4. Step 4: Simplify right side
    18,387.36x = 144,546,913.23
  5. Step 5: Solve for x
    x = 144,546,913.23/18,387.36
  6. Step 6: Final answer
    x = 7,861.21

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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.