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Finding the Fourth Proportional to 21,670.50, 32,517.90 and 21,505.26

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Solution

The fourth proportional to 21,670.50, 32,517.90 and 21,505.26 is: 32,269.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.50 : 32,517.90 = 21,505.26 : x
  2. Step 2: Convert to fraction form
    21,670.50/32,517.90 = 21,505.26/x
  3. Step 3: Cross multiply
    21,670.50x = 32,517.90 × 21,505.26
  4. Step 4: Simplify right side
    21,670.50x = 699,305,894.15
  5. Step 5: Solve for x
    x = 699,305,894.15/21,670.50
  6. Step 6: Final answer
    x = 32,269.95

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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.