Home / 20,074.66-27,702.10-10,999.97

Finding the Fourth Proportional to 20,074.66, 27,702.10 and 10,999.97

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Solution

The fourth proportional to 20,074.66, 27,702.10 and 10,999.97 is: 15,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,074.66 : 27,702.10 = 10,999.97 : x
  2. Step 2: Convert to fraction form
    20,074.66/27,702.10 = 10,999.97/x
  3. Step 3: Cross multiply
    20,074.66x = 27,702.10 × 10,999.97
  4. Step 4: Simplify right side
    20,074.66x = 304,722,268.94
  5. Step 5: Solve for x
    x = 304,722,268.94/20,074.66
  6. Step 6: Final answer
    x = 15,179.45

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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.