Home / 27,678.24-38,196-15,743.52

Finding the Fourth Proportional to 27,678.24, 38,196 and 15,743.52

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Solution

The fourth proportional to 27,678.24, 38,196 and 15,743.52 is: 21,726.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,678.24 : 38,196 = 15,743.52 : x
  2. Step 2: Convert to fraction form
    27,678.24/38,196 = 15,743.52/x
  3. Step 3: Cross multiply
    27,678.24x = 38,196 × 15,743.52
  4. Step 4: Simplify right side
    27,678.24x = 601,339,489.92
  5. Step 5: Solve for x
    x = 601,339,489.92/27,678.24
  6. Step 6: Final answer
    x = 21,726.07

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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.