Home / 35,131.39-48,471.55-20,979.07

Finding the Fourth Proportional to 35,131.39, 48,471.55 and 20,979.07

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Solution

The fourth proportional to 35,131.39, 48,471.55 and 20,979.07 is: 28,945.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,131.39 : 48,471.55 = 20,979.07 : x
  2. Step 2: Convert to fraction form
    35,131.39/48,471.55 = 20,979.07/x
  3. Step 3: Cross multiply
    35,131.39x = 48,471.55 × 20,979.07
  4. Step 4: Simplify right side
    35,131.39x = 1,016,888,040.46
  5. Step 5: Solve for x
    x = 1,016,888,040.46/35,131.39
  6. Step 6: Final answer
    x = 28,945.28

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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.