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Finding the Fourth Proportional to 35,479.52, 48,968.82 and 20,382.54

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Solution

The fourth proportional to 35,479.52, 48,968.82 and 20,382.54 is: 28,131.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,479.52 : 48,968.82 = 20,382.54 : x
  2. Step 2: Convert to fraction form
    35,479.52/48,968.82 = 20,382.54/x
  3. Step 3: Cross multiply
    35,479.52x = 48,968.82 × 20,382.54
  4. Step 4: Simplify right side
    35,479.52x = 998,108,932.40
  5. Step 5: Solve for x
    x = 998,108,932.40/35,479.52
  6. Step 6: Final answer
    x = 28,131.98

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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.