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Finding the Fourth Proportional to 22,188.60, 33,218.10 and 21,540.60

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Solution

The fourth proportional to 22,188.60, 33,218.10 and 21,540.60 is: 32,247.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.60 : 33,218.10 = 21,540.60 : x
  2. Step 2: Convert to fraction form
    22,188.60/33,218.10 = 21,540.60/x
  3. Step 3: Cross multiply
    22,188.60x = 33,218.10 × 21,540.60
  4. Step 4: Simplify right side
    22,188.60x = 715,537,804.86
  5. Step 5: Solve for x
    x = 715,537,804.86/22,188.60
  6. Step 6: Final answer
    x = 32,247.99

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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.