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Finding the Fourth Proportional to 21,576.88, 32,369.01 and 9,891.10

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Solution

The fourth proportional to 21,576.88, 32,369.01 and 9,891.10 is: 14,838.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,576.88 : 32,369.01 = 9,891.10 : x
  2. Step 2: Convert to fraction form
    21,576.88/32,369.01 = 9,891.10/x
  3. Step 3: Cross multiply
    21,576.88x = 32,369.01 × 9,891.10
  4. Step 4: Simplify right side
    21,576.88x = 320,165,114.81
  5. Step 5: Solve for x
    x = 320,165,114.81/21,576.88
  6. Step 6: Final answer
    x = 14,838.34

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.