Home / 10,121.60-15,183.98-4,278.24

Finding the Fourth Proportional to 10,121.60, 15,183.98 and 4,278.24

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Solution

The fourth proportional to 10,121.60, 15,183.98 and 4,278.24 is: 6,418.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.60 : 15,183.98 = 4,278.24 : x
  2. Step 2: Convert to fraction form
    10,121.60/15,183.98 = 4,278.24/x
  3. Step 3: Cross multiply
    10,121.60x = 15,183.98 × 4,278.24
  4. Step 4: Simplify right side
    10,121.60x = 64,960,710.60
  5. Step 5: Solve for x
    x = 64,960,710.60/10,121.60
  6. Step 6: Final answer
    x = 6,418.03

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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.