Home / 27,728.88-38,276.28-18,822.48

Finding the Fourth Proportional to 27,728.88, 38,276.28 and 18,822.48

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Solution

The fourth proportional to 27,728.88, 38,276.28 and 18,822.48 is: 25,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.88 : 38,276.28 = 18,822.48 : x
  2. Step 2: Convert to fraction form
    27,728.88/38,276.28 = 18,822.48/x
  3. Step 3: Cross multiply
    27,728.88x = 38,276.28 × 18,822.48
  4. Step 4: Simplify right side
    27,728.88x = 720,454,514.77
  5. Step 5: Solve for x
    x = 720,454,514.77/27,728.88
  6. Step 6: Final answer
    x = 25,982.10

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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.