Home / 27,994.30-38,634.86-20,908.42

Finding the Fourth Proportional to 27,994.30, 38,634.86 and 20,908.42

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Solution

The fourth proportional to 27,994.30, 38,634.86 and 20,908.42 is: 28,855.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,994.30 : 38,634.86 = 20,908.42 : x
  2. Step 2: Convert to fraction form
    27,994.30/38,634.86 = 20,908.42/x
  3. Step 3: Cross multiply
    27,994.30x = 38,634.86 × 20,908.42
  4. Step 4: Simplify right side
    27,994.30x = 807,793,879.52
  5. Step 5: Solve for x
    x = 807,793,879.52/27,994.30
  6. Step 6: Final answer
    x = 28,855.66

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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.