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Finding the Fourth Proportional to 21,728.97, 32,599.17 and 6,938.19

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Solution

The fourth proportional to 21,728.97, 32,599.17 and 6,938.19 is: 10,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,728.97 : 32,599.17 = 6,938.19 : x
  2. Step 2: Convert to fraction form
    21,728.97/32,599.17 = 6,938.19/x
  3. Step 3: Cross multiply
    21,728.97x = 32,599.17 × 6,938.19
  4. Step 4: Simplify right side
    21,728.97x = 226,179,235.30
  5. Step 5: Solve for x
    x = 226,179,235.30/21,728.97
  6. Step 6: Final answer
    x = 10,409.11

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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.