Home / 27,965.11-38,559.85-20,879.59

Finding the Fourth Proportional to 27,965.11, 38,559.85 and 20,879.59

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Solution

The fourth proportional to 27,965.11, 38,559.85 and 20,879.59 is: 28,789.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,965.11 : 38,559.85 = 20,879.59 : x
  2. Step 2: Convert to fraction form
    27,965.11/38,559.85 = 20,879.59/x
  3. Step 3: Cross multiply
    27,965.11x = 38,559.85 × 20,879.59
  4. Step 4: Simplify right side
    27,965.11x = 805,113,858.46
  5. Step 5: Solve for x
    x = 805,113,858.46/27,965.11
  6. Step 6: Final answer
    x = 28,789.94

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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.