Home / 39,857.12-55,003.22-21,952.68

Finding the Fourth Proportional to 39,857.12, 55,003.22 and 21,952.68

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Solution

The fourth proportional to 39,857.12, 55,003.22 and 21,952.68 is: 30,294.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.12 : 55,003.22 = 21,952.68 : x
  2. Step 2: Convert to fraction form
    39,857.12/55,003.22 = 21,952.68/x
  3. Step 3: Cross multiply
    39,857.12x = 55,003.22 × 21,952.68
  4. Step 4: Simplify right side
    39,857.12x = 1,207,468,087.63
  5. Step 5: Solve for x
    x = 1,207,468,087.63/39,857.12
  6. Step 6: Final answer
    x = 30,294.92

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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.