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Finding the Fourth Proportional to 22,143.90, 33,216.24 and 6,561.90

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Solution

The fourth proportional to 22,143.90, 33,216.24 and 6,561.90 is: 9,842.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,143.90 : 33,216.24 = 6,561.90 : x
  2. Step 2: Convert to fraction form
    22,143.90/33,216.24 = 6,561.90/x
  3. Step 3: Cross multiply
    22,143.90x = 33,216.24 × 6,561.90
  4. Step 4: Simplify right side
    22,143.90x = 217,961,645.26
  5. Step 5: Solve for x
    x = 217,961,645.26/22,143.90
  6. Step 6: Final answer
    x = 9,842.97

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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.