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Finding the Fourth Proportional to 21,889.58, 32,833.02 and 8,732.48

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Solution

The fourth proportional to 21,889.58, 32,833.02 and 8,732.48 is: 13,098.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.58 : 32,833.02 = 8,732.48 : x
  2. Step 2: Convert to fraction form
    21,889.58/32,833.02 = 8,732.48/x
  3. Step 3: Cross multiply
    21,889.58x = 32,833.02 × 8,732.48
  4. Step 4: Simplify right side
    21,889.58x = 286,713,690.49
  5. Step 5: Solve for x
    x = 286,713,690.49/21,889.58
  6. Step 6: Final answer
    x = 13,098.18

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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.