Home / 39,979.68-55,167.12-22,073.28

Finding the Fourth Proportional to 39,979.68, 55,167.12 and 22,073.28

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Solution

The fourth proportional to 39,979.68, 55,167.12 and 22,073.28 is: 30,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.68 : 55,167.12 = 22,073.28 : x
  2. Step 2: Convert to fraction form
    39,979.68/55,167.12 = 22,073.28/x
  3. Step 3: Cross multiply
    39,979.68x = 55,167.12 × 22,073.28
  4. Step 4: Simplify right side
    39,979.68x = 1,217,719,286.55
  5. Step 5: Solve for x
    x = 1,217,719,286.55/39,979.68
  6. Step 6: Final answer
    x = 30,458.46

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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.