Home / 39,987.27-55,179.23-22,990.64

Finding the Fourth Proportional to 39,987.27, 55,179.23 and 22,990.64

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Solution

The fourth proportional to 39,987.27, 55,179.23 and 22,990.64 is: 31,725.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,987.27 : 55,179.23 = 22,990.64 : x
  2. Step 2: Convert to fraction form
    39,987.27/55,179.23 = 22,990.64/x
  3. Step 3: Cross multiply
    39,987.27x = 55,179.23 × 22,990.64
  4. Step 4: Simplify right side
    39,987.27x = 1,268,605,421.56
  5. Step 5: Solve for x
    x = 1,268,605,421.56/39,987.27
  6. Step 6: Final answer
    x = 31,725.23

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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.