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Finding the Fourth Proportional to 21,969.39, 32,958.24 and 8,822.79

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Solution

The fourth proportional to 21,969.39, 32,958.24 and 8,822.79 is: 13,235.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.39 : 32,958.24 = 8,822.79 : x
  2. Step 2: Convert to fraction form
    21,969.39/32,958.24 = 8,822.79/x
  3. Step 3: Cross multiply
    21,969.39x = 32,958.24 × 8,822.79
  4. Step 4: Simplify right side
    21,969.39x = 290,783,630.29
  5. Step 5: Solve for x
    x = 290,783,630.29/21,969.39
  6. Step 6: Final answer
    x = 13,235.85

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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.