Home / 19,987.40-27,581.42-11,034.68

Finding the Fourth Proportional to 19,987.40, 27,581.42 and 11,034.68

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Solution

The fourth proportional to 19,987.40, 27,581.42 and 11,034.68 is: 15,227.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.40 : 27,581.42 = 11,034.68 : x
  2. Step 2: Convert to fraction form
    19,987.40/27,581.42 = 11,034.68/x
  3. Step 3: Cross multiply
    19,987.40x = 27,581.42 × 11,034.68
  4. Step 4: Simplify right side
    19,987.40x = 304,352,143.65
  5. Step 5: Solve for x
    x = 304,352,143.65/19,987.40
  6. Step 6: Final answer
    x = 15,227.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.