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Finding the Fourth Proportional to 35,494.72, 48,979.84 and 20,382.56

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Solution

The fourth proportional to 35,494.72, 48,979.84 and 20,382.56 is: 28,126.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,494.72 : 48,979.84 = 20,382.56 : x
  2. Step 2: Convert to fraction form
    35,494.72/48,979.84 = 20,382.56/x
  3. Step 3: Cross multiply
    35,494.72x = 48,979.84 × 20,382.56
  4. Step 4: Simplify right side
    35,494.72x = 998,334,527.59
  5. Step 5: Solve for x
    x = 998,334,527.59/35,494.72
  6. Step 6: Final answer
    x = 28,126.28

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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.