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Finding the Fourth Proportional to 21,969.75, 32,958.78 and 8,823.15

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Solution

The fourth proportional to 21,969.75, 32,958.78 and 8,823.15 is: 13,236.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.75 : 32,958.78 = 8,823.15 : x
  2. Step 2: Convert to fraction form
    21,969.75/32,958.78 = 8,823.15/x
  3. Step 3: Cross multiply
    21,969.75x = 32,958.78 × 8,823.15
  4. Step 4: Simplify right side
    21,969.75x = 290,800,259.76
  5. Step 5: Solve for x
    x = 290,800,259.76/21,969.75
  6. Step 6: Final answer
    x = 13,236.39

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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.