Home / 11,122.12-15,347.73-6,645.79

Finding the Fourth Proportional to 11,122.12, 15,347.73 and 6,645.79

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Solution

The fourth proportional to 11,122.12, 15,347.73 and 6,645.79 is: 9,170.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.12 : 15,347.73 = 6,645.79 : x
  2. Step 2: Convert to fraction form
    11,122.12/15,347.73 = 6,645.79/x
  3. Step 3: Cross multiply
    11,122.12x = 15,347.73 × 6,645.79
  4. Step 4: Simplify right side
    11,122.12x = 101,997,790.56
  5. Step 5: Solve for x
    x = 101,997,790.56/11,122.12
  6. Step 6: Final answer
    x = 9,170.71

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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.