Home / 27,877.80-38,470.62-15,942.33

Finding the Fourth Proportional to 27,877.80, 38,470.62 and 15,942.33

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Solution

The fourth proportional to 27,877.80, 38,470.62 and 15,942.33 is: 21,999.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,877.80 : 38,470.62 = 15,942.33 : x
  2. Step 2: Convert to fraction form
    27,877.80/38,470.62 = 15,942.33/x
  3. Step 3: Cross multiply
    27,877.80x = 38,470.62 × 15,942.33
  4. Step 4: Simplify right side
    27,877.80x = 613,311,319.34
  5. Step 5: Solve for x
    x = 613,311,319.34/27,877.80
  6. Step 6: Final answer
    x = 21,999.99

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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.