Home / 27,658.08-38,167.20-15,721.92

Finding the Fourth Proportional to 27,658.08, 38,167.20 and 15,721.92

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Solution

The fourth proportional to 27,658.08, 38,167.20 and 15,721.92 is: 21,695.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,658.08 : 38,167.20 = 15,721.92 : x
  2. Step 2: Convert to fraction form
    27,658.08/38,167.20 = 15,721.92/x
  3. Step 3: Cross multiply
    27,658.08x = 38,167.20 × 15,721.92
  4. Step 4: Simplify right side
    27,658.08x = 600,061,665.02
  5. Step 5: Solve for x
    x = 600,061,665.02/27,658.08
  6. Step 6: Final answer
    x = 21,695.71

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1.5x scale

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.