Home / 39,857.76-55,003.68-21,952.32

Finding the Fourth Proportional to 39,857.76, 55,003.68 and 21,952.32

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Solution

The fourth proportional to 39,857.76, 55,003.68 and 21,952.32 is: 30,294.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,857.76 : 55,003.68 = 21,952.32 : x
  2. Step 2: Convert to fraction form
    39,857.76/55,003.68 = 21,952.32/x
  3. Step 3: Cross multiply
    39,857.76x = 55,003.68 × 21,952.32
  4. Step 4: Simplify right side
    39,857.76x = 1,207,458,384.54
  5. Step 5: Solve for x
    x = 1,207,458,384.54/39,857.76
  6. Step 6: Final answer
    x = 30,294.19

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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.