Home / 27,964.86-38,559.51-20,879.34

Finding the Fourth Proportional to 27,964.86, 38,559.51 and 20,879.34

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Solution

The fourth proportional to 27,964.86, 38,559.51 and 20,879.34 is: 28,789.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,964.86 : 38,559.51 = 20,879.34 : x
  2. Step 2: Convert to fraction form
    27,964.86/38,559.51 = 20,879.34/x
  3. Step 3: Cross multiply
    27,964.86x = 38,559.51 × 20,879.34
  4. Step 4: Simplify right side
    27,964.86x = 805,097,119.52
  5. Step 5: Solve for x
    x = 805,097,119.52/27,964.86
  6. Step 6: Final answer
    x = 28,789.60

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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.