Home / 22,138.72-33,208.56-8,280.16

Finding the Fourth Proportional to 22,138.72, 33,208.56 and 8,280.16

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Solution

The fourth proportional to 22,138.72, 33,208.56 and 8,280.16 is: 12,420.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.72 : 33,208.56 = 8,280.16 : x
  2. Step 2: Convert to fraction form
    22,138.72/33,208.56 = 8,280.16/x
  3. Step 3: Cross multiply
    22,138.72x = 33,208.56 × 8,280.16
  4. Step 4: Simplify right side
    22,138.72x = 274,972,190.17
  5. Step 5: Solve for x
    x = 274,972,190.17/22,138.72
  6. Step 6: Final answer
    x = 12,420.42

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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.