Home / 27,806.47-38,375.69-15,871.61

Finding the Fourth Proportional to 27,806.47, 38,375.69 and 15,871.61

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Solution

The fourth proportional to 27,806.47, 38,375.69 and 15,871.61 is: 21,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.47 : 38,375.69 = 15,871.61 : x
  2. Step 2: Convert to fraction form
    27,806.47/38,375.69 = 15,871.61/x
  3. Step 3: Cross multiply
    27,806.47x = 38,375.69 × 15,871.61
  4. Step 4: Simplify right side
    27,806.47x = 609,084,001.74
  5. Step 5: Solve for x
    x = 609,084,001.74/27,806.47
  6. Step 6: Final answer
    x = 21,904.40

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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.