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Finding the Fourth Proportional to 39,857.52, 55,003.50 and 21,952.92

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Solution

The fourth proportional to 39,857.52, 55,003.50 and 21,952.92 is: 30,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.52 : 55,003.50 = 21,952.92 : x
  2. Step 2: Convert to fraction form
    39,857.52/55,003.50 = 21,952.92/x
  3. Step 3: Cross multiply
    39,857.52x = 55,003.50 × 21,952.92
  4. Step 4: Simplify right side
    39,857.52x = 1,207,487,435.22
  5. Step 5: Solve for x
    x = 1,207,487,435.22/39,857.52
  6. Step 6: Final answer
    x = 30,295.10

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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.