Home / 11,122.86-15,349.17-6,645.57

Finding the Fourth Proportional to 11,122.86, 15,349.17 and 6,645.57

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Solution

The fourth proportional to 11,122.86, 15,349.17 and 6,645.57 is: 9,170.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.86 : 15,349.17 = 6,645.57 : x
  2. Step 2: Convert to fraction form
    11,122.86/15,349.17 = 6,645.57/x
  3. Step 3: Cross multiply
    11,122.86x = 15,349.17 × 6,645.57
  4. Step 4: Simplify right side
    11,122.86x = 102,003,983.68
  5. Step 5: Solve for x
    x = 102,003,983.68/11,122.86
  6. Step 6: Final answer
    x = 9,170.66

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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.