Home / 11,822.81-17,740.40-7,661.75

Finding the Fourth Proportional to 11,822.81, 17,740.40 and 7,661.75

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Solution

The fourth proportional to 11,822.81, 17,740.40 and 7,661.75 is: 11,496.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,822.81 : 17,740.40 = 7,661.75 : x
  2. Step 2: Convert to fraction form
    11,822.81/17,740.40 = 7,661.75/x
  3. Step 3: Cross multiply
    11,822.81x = 17,740.40 × 7,661.75
  4. Step 4: Simplify right side
    11,822.81x = 135,922,382.69
  5. Step 5: Solve for x
    x = 135,922,382.69/11,822.81
  6. Step 6: Final answer
    x = 11,496.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.