Home / 40,108.96-55,351.02-21,959.38

Finding the Fourth Proportional to 40,108.96, 55,351.02 and 21,959.38

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Solution

The fourth proportional to 40,108.96, 55,351.02 and 21,959.38 is: 30,304.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,108.96 : 55,351.02 = 21,959.38 : x
  2. Step 2: Convert to fraction form
    40,108.96/55,351.02 = 21,959.38/x
  3. Step 3: Cross multiply
    40,108.96x = 55,351.02 × 21,959.38
  4. Step 4: Simplify right side
    40,108.96x = 1,215,473,695.02
  5. Step 5: Solve for x
    x = 1,215,473,695.02/40,108.96
  6. Step 6: Final answer
    x = 30,304.30

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Double scale
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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.