Home / 11,279.25-15,565.37-6,311.25

Finding the Fourth Proportional to 11,279.25, 15,565.37 and 6,311.25

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Solution

The fourth proportional to 11,279.25, 15,565.37 and 6,311.25 is: 8,709.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.25 : 15,565.37 = 6,311.25 : x
  2. Step 2: Convert to fraction form
    11,279.25/15,565.37 = 6,311.25/x
  3. Step 3: Cross multiply
    11,279.25x = 15,565.37 × 6,311.25
  4. Step 4: Simplify right side
    11,279.25x = 98,236,909.86
  5. Step 5: Solve for x
    x = 98,236,909.86/11,279.25
  6. Step 6: Final answer
    x = 8,709.53

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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.