Home / 27,911.32-38,515.38-15,971.92

Finding the Fourth Proportional to 27,911.32, 38,515.38 and 15,971.92

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Solution

The fourth proportional to 27,911.32, 38,515.38 and 15,971.92 is: 22,039.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.32 : 38,515.38 = 15,971.92 : x
  2. Step 2: Convert to fraction form
    27,911.32/38,515.38 = 15,971.92/x
  3. Step 3: Cross multiply
    27,911.32x = 38,515.38 × 15,971.92
  4. Step 4: Simplify right side
    27,911.32x = 615,164,531.74
  5. Step 5: Solve for x
    x = 615,164,531.74/27,911.32
  6. Step 6: Final answer
    x = 22,039.97

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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.