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Finding the Fourth Proportional to 39,857.63, 55,006.02 and 21,952.63

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Solution

The fourth proportional to 39,857.63, 55,006.02 and 21,952.63 is: 30,296.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.63 : 55,006.02 = 21,952.63 : x
  2. Step 2: Convert to fraction form
    39,857.63/55,006.02 = 21,952.63/x
  3. Step 3: Cross multiply
    39,857.63x = 55,006.02 × 21,952.63
  4. Step 4: Simplify right side
    39,857.63x = 1,207,526,667.32
  5. Step 5: Solve for x
    x = 1,207,526,667.32/39,857.63
  6. Step 6: Final answer
    x = 30,296.00

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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.