Home / 27,925.36-38,540.12-15,990

Finding the Fourth Proportional to 27,925.36, 38,540.12 and 15,990

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Solution

The fourth proportional to 27,925.36, 38,540.12 and 15,990 is: 22,067.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,925.36 : 38,540.12 = 15,990 : x
  2. Step 2: Convert to fraction form
    27,925.36/38,540.12 = 15,990/x
  3. Step 3: Cross multiply
    27,925.36x = 38,540.12 × 15,990
  4. Step 4: Simplify right side
    27,925.36x = 616,256,518.80
  5. Step 5: Solve for x
    x = 616,256,518.80/27,925.36
  6. Step 6: Final answer
    x = 22,067.99

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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.