Home / 10,515.20-15,745.44-10,203.54

Finding the Fourth Proportional to 10,515.20, 15,745.44 and 10,203.54

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Solution

The fourth proportional to 10,515.20, 15,745.44 and 10,203.54 is: 15,278.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,515.20 : 15,745.44 = 10,203.54 : x
  2. Step 2: Convert to fraction form
    10,515.20/15,745.44 = 10,203.54/x
  3. Step 3: Cross multiply
    10,515.20x = 15,745.44 × 10,203.54
  4. Step 4: Simplify right side
    10,515.20x = 160,659,226.86
  5. Step 5: Solve for x
    x = 160,659,226.86/10,515.20
  6. Step 6: Final answer
    x = 15,278.76

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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.