Home / 35,131.36-48,471.48-20,979.04

Finding the Fourth Proportional to 35,131.36, 48,471.48 and 20,979.04

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Solution

The fourth proportional to 35,131.36, 48,471.48 and 20,979.04 is: 28,945.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,131.36 : 48,471.48 = 20,979.04 : x
  2. Step 2: Convert to fraction form
    35,131.36/48,471.48 = 20,979.04/x
  3. Step 3: Cross multiply
    35,131.36x = 48,471.48 × 20,979.04
  4. Step 4: Simplify right side
    35,131.36x = 1,016,885,117.78
  5. Step 5: Solve for x
    x = 1,016,885,117.78/35,131.36
  6. Step 6: Final answer
    x = 28,945.22

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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.