Home / 11,559.36-15,934.92-8,191.72

Finding the Fourth Proportional to 11,559.36, 15,934.92 and 8,191.72

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Solution

The fourth proportional to 11,559.36, 15,934.92 and 8,191.72 is: 11,292.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,559.36 : 15,934.92 = 8,191.72 : x
  2. Step 2: Convert to fraction form
    11,559.36/15,934.92 = 8,191.72/x
  3. Step 3: Cross multiply
    11,559.36x = 15,934.92 × 8,191.72
  4. Step 4: Simplify right side
    11,559.36x = 130,534,402.86
  5. Step 5: Solve for x
    x = 130,534,402.86/11,559.36
  6. Step 6: Final answer
    x = 11,292.53

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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.