Home / 18,127.69-27,191.85-4,979.98

Finding the Fourth Proportional to 18,127.69, 27,191.85 and 4,979.98

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Solution

The fourth proportional to 18,127.69, 27,191.85 and 4,979.98 is: 7,470.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,127.69 : 27,191.85 = 4,979.98 : x
  2. Step 2: Convert to fraction form
    18,127.69/27,191.85 = 4,979.98/x
  3. Step 3: Cross multiply
    18,127.69x = 27,191.85 × 4,979.98
  4. Step 4: Simplify right side
    18,127.69x = 135,414,869.16
  5. Step 5: Solve for x
    x = 135,414,869.16/18,127.69
  6. Step 6: Final answer
    x = 7,470.06

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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.