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Finding the Fourth Proportional to 35,493.92, 48,979.80 and 20,376.08

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Solution

The fourth proportional to 35,493.92, 48,979.80 and 20,376.08 is: 28,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,493.92 : 48,979.80 = 20,376.08 : x
  2. Step 2: Convert to fraction form
    35,493.92/48,979.80 = 20,376.08/x
  3. Step 3: Cross multiply
    35,493.92x = 48,979.80 × 20,376.08
  4. Step 4: Simplify right side
    35,493.92x = 998,016,323.18
  5. Step 5: Solve for x
    x = 998,016,323.18/35,493.92
  6. Step 6: Final answer
    x = 28,117.95

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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.