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Finding the Fourth Proportional to 21,554.85, 32,320.08 and 8,392.08

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Solution

The fourth proportional to 21,554.85, 32,320.08 and 8,392.08 is: 12,583.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,554.85 : 32,320.08 = 8,392.08 : x
  2. Step 2: Convert to fraction form
    21,554.85/32,320.08 = 8,392.08/x
  3. Step 3: Cross multiply
    21,554.85x = 32,320.08 × 8,392.08
  4. Step 4: Simplify right side
    21,554.85x = 271,232,696.97
  5. Step 5: Solve for x
    x = 271,232,696.97/21,554.85
  6. Step 6: Final answer
    x = 12,583.37

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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.