Home / 11,241.96-15,510.78-6,991.92

Finding the Fourth Proportional to 11,241.96, 15,510.78 and 6,991.92

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Solution

The fourth proportional to 11,241.96, 15,510.78 and 6,991.92 is: 9,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,241.96 : 15,510.78 = 6,991.92 : x
  2. Step 2: Convert to fraction form
    11,241.96/15,510.78 = 6,991.92/x
  3. Step 3: Cross multiply
    11,241.96x = 15,510.78 × 6,991.92
  4. Step 4: Simplify right side
    11,241.96x = 108,450,132.90
  5. Step 5: Solve for x
    x = 108,450,132.90/11,241.96
  6. Step 6: Final answer
    x = 9,646.91

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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.