Home / 10,122.26-15,185.44-4,278.86

Finding the Fourth Proportional to 10,122.26, 15,185.44 and 4,278.86

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Solution

The fourth proportional to 10,122.26, 15,185.44 and 4,278.86 is: 6,419.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,122.26 : 15,185.44 = 4,278.86 : x
  2. Step 2: Convert to fraction form
    10,122.26/15,185.44 = 4,278.86/x
  3. Step 3: Cross multiply
    10,122.26x = 15,185.44 × 4,278.86
  4. Step 4: Simplify right side
    10,122.26x = 64,976,371.80
  5. Step 5: Solve for x
    x = 64,976,371.80/10,122.26
  6. Step 6: Final answer
    x = 6,419.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.