Home / 11,120.67-15,320.16-7,757.37

Finding the Fourth Proportional to 11,120.67, 15,320.16 and 7,757.37

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Solution

The fourth proportional to 11,120.67, 15,320.16 and 7,757.37 is: 10,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,120.67 : 15,320.16 = 7,757.37 : x
  2. Step 2: Convert to fraction form
    11,120.67/15,320.16 = 7,757.37/x
  3. Step 3: Cross multiply
    11,120.67x = 15,320.16 × 7,757.37
  4. Step 4: Simplify right side
    11,120.67x = 118,844,149.58
  5. Step 5: Solve for x
    x = 118,844,149.58/11,120.67
  6. Step 6: Final answer
    x = 10,686.78

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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.