Home / 18,387.72-27,581.52-7,860.96

Finding the Fourth Proportional to 18,387.72, 27,581.52 and 7,860.96

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Solution

The fourth proportional to 18,387.72, 27,581.52 and 7,860.96 is: 11,791.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.72 : 27,581.52 = 7,860.96 : x
  2. Step 2: Convert to fraction form
    18,387.72/27,581.52 = 7,860.96/x
  3. Step 3: Cross multiply
    18,387.72x = 27,581.52 × 7,860.96
  4. Step 4: Simplify right side
    18,387.72x = 216,817,225.46
  5. Step 5: Solve for x
    x = 216,817,225.46/18,387.72
  6. Step 6: Final answer
    x = 11,791.41

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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.