Home / 11,131.36-15,334.92-7,768.24

Finding the Fourth Proportional to 11,131.36, 15,334.92 and 7,768.24

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Solution

The fourth proportional to 11,131.36, 15,334.92 and 7,768.24 is: 10,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,131.36 : 15,334.92 = 7,768.24 : x
  2. Step 2: Convert to fraction form
    11,131.36/15,334.92 = 7,768.24/x
  3. Step 3: Cross multiply
    11,131.36x = 15,334.92 × 7,768.24
  4. Step 4: Simplify right side
    11,131.36x = 119,125,300.60
  5. Step 5: Solve for x
    x = 119,125,300.60/11,131.36
  6. Step 6: Final answer
    x = 10,701.78

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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.