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Finding the Fourth Proportional to 22,456.78, 33,683.82 and 6,661.18

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Solution

The fourth proportional to 22,456.78, 33,683.82 and 6,661.18 is: 9,991.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.78 : 33,683.82 = 6,661.18 : x
  2. Step 2: Convert to fraction form
    22,456.78/33,683.82 = 6,661.18/x
  3. Step 3: Cross multiply
    22,456.78x = 33,683.82 × 6,661.18
  4. Step 4: Simplify right side
    22,456.78x = 224,373,988.11
  5. Step 5: Solve for x
    x = 224,373,988.11/22,456.78
  6. Step 6: Final answer
    x = 9,991.37

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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.