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Finding the Fourth Proportional to 23,909.56, 32,975.56 and 21,222.75

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Solution

The fourth proportional to 23,909.56, 32,975.56 and 21,222.75 is: 29,269.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,909.56 : 32,975.56 = 21,222.75 : x
  2. Step 2: Convert to fraction form
    23,909.56/32,975.56 = 21,222.75/x
  3. Step 3: Cross multiply
    23,909.56x = 32,975.56 × 21,222.75
  4. Step 4: Simplify right side
    23,909.56x = 699,831,901.11
  5. Step 5: Solve for x
    x = 699,831,901.11/23,909.56
  6. Step 6: Final answer
    x = 29,269.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.