Home / 27,908.91-38,503.43-15,806.61

Finding the Fourth Proportional to 27,908.91, 38,503.43 and 15,806.61

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Solution

The fourth proportional to 27,908.91, 38,503.43 and 15,806.61 is: 21,806.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,908.91 : 38,503.43 = 15,806.61 : x
  2. Step 2: Convert to fraction form
    27,908.91/38,503.43 = 15,806.61/x
  3. Step 3: Cross multiply
    27,908.91x = 38,503.43 × 15,806.61
  4. Step 4: Simplify right side
    27,908.91x = 608,608,622.64
  5. Step 5: Solve for x
    x = 608,608,622.64/27,908.91
  6. Step 6: Final answer
    x = 21,806.96

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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.