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Finding the Fourth Proportional to 22,424.85, 33,639.71 and 8,391.60

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Solution

The fourth proportional to 22,424.85, 33,639.71 and 8,391.60 is: 12,588.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,424.85 : 33,639.71 = 8,391.60 : x
  2. Step 2: Convert to fraction form
    22,424.85/33,639.71 = 8,391.60/x
  3. Step 3: Cross multiply
    22,424.85x = 33,639.71 × 8,391.60
  4. Step 4: Simplify right side
    22,424.85x = 282,290,948.48
  5. Step 5: Solve for x
    x = 282,290,948.48/22,424.85
  6. Step 6: Final answer
    x = 12,588.31

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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.