Home / 39,979.13-55,172.97-22,988.88

Finding the Fourth Proportional to 39,979.13, 55,172.97 and 22,988.88

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Solution

The fourth proportional to 39,979.13, 55,172.97 and 22,988.88 is: 31,725.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.13 : 55,172.97 = 22,988.88 : x
  2. Step 2: Convert to fraction form
    39,979.13/55,172.97 = 22,988.88/x
  3. Step 3: Cross multiply
    39,979.13x = 55,172.97 × 22,988.88
  4. Step 4: Simplify right side
    39,979.13x = 1,268,364,786.57
  5. Step 5: Solve for x
    x = 1,268,364,786.57/39,979.13
  6. Step 6: Final answer
    x = 31,725.68

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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.