Home / 27,884.12-38,470.75-15,939.05

Finding the Fourth Proportional to 27,884.12, 38,470.75 and 15,939.05

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Solution

The fourth proportional to 27,884.12, 38,470.75 and 15,939.05 is: 21,990.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.12 : 38,470.75 = 15,939.05 : x
  2. Step 2: Convert to fraction form
    27,884.12/38,470.75 = 15,939.05/x
  3. Step 3: Cross multiply
    27,884.12x = 38,470.75 × 15,939.05
  4. Step 4: Simplify right side
    27,884.12x = 613,186,975.59
  5. Step 5: Solve for x
    x = 613,186,975.59/27,884.12
  6. Step 6: Final answer
    x = 21,990.55

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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.