Home / 10,987.38-15,163.20-6,272.64

Finding the Fourth Proportional to 10,987.38, 15,163.20 and 6,272.64

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Solution

The fourth proportional to 10,987.38, 15,163.20 and 6,272.64 is: 8,656.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,987.38 : 15,163.20 = 6,272.64 : x
  2. Step 2: Convert to fraction form
    10,987.38/15,163.20 = 6,272.64/x
  3. Step 3: Cross multiply
    10,987.38x = 15,163.20 × 6,272.64
  4. Step 4: Simplify right side
    10,987.38x = 95,113,294.85
  5. Step 5: Solve for x
    x = 95,113,294.85/10,987.38
  6. Step 6: Final answer
    x = 8,656.59

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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.