Home / 27,911.13-38,515.13-15,971.73

Finding the Fourth Proportional to 27,911.13, 38,515.13 and 15,971.73

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Solution

The fourth proportional to 27,911.13, 38,515.13 and 15,971.73 is: 22,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.13 : 38,515.13 = 15,971.73 : x
  2. Step 2: Convert to fraction form
    27,911.13/38,515.13 = 15,971.73/x
  3. Step 3: Cross multiply
    27,911.13x = 38,515.13 × 15,971.73
  4. Step 4: Simplify right side
    27,911.13x = 615,153,177.42
  5. Step 5: Solve for x
    x = 615,153,177.42/27,911.13
  6. Step 6: Final answer
    x = 22,039.71

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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.