Home / 10,961.86-16,445.22-5,115.28

Finding the Fourth Proportional to 10,961.86, 16,445.22 and 5,115.28

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Solution

The fourth proportional to 10,961.86, 16,445.22 and 5,115.28 is: 7,674.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,961.86 : 16,445.22 = 5,115.28 : x
  2. Step 2: Convert to fraction form
    10,961.86/16,445.22 = 5,115.28/x
  3. Step 3: Cross multiply
    10,961.86x = 16,445.22 × 5,115.28
  4. Step 4: Simplify right side
    10,961.86x = 84,121,876.64
  5. Step 5: Solve for x
    x = 84,121,876.64/10,961.86
  6. Step 6: Final answer
    x = 7,674.05

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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.