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Finding the Fourth Proportional to 21,744.31, 32,616.48 and 5,328.31

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Solution

The fourth proportional to 21,744.31, 32,616.48 and 5,328.31 is: 7,992.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,744.31 : 32,616.48 = 5,328.31 : x
  2. Step 2: Convert to fraction form
    21,744.31/32,616.48 = 5,328.31/x
  3. Step 3: Cross multiply
    21,744.31x = 32,616.48 × 5,328.31
  4. Step 4: Simplify right side
    21,744.31x = 173,790,716.55
  5. Step 5: Solve for x
    x = 173,790,716.55/21,744.31
  6. Step 6: Final answer
    x = 7,992.47

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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.