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Finding the Fourth Proportional to 21,951.52, 32,898.56 and 8,813.11

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Solution

The fourth proportional to 21,951.52, 32,898.56 and 8,813.11 is: 13,208.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.52 : 32,898.56 = 8,813.11 : x
  2. Step 2: Convert to fraction form
    21,951.52/32,898.56 = 8,813.11/x
  3. Step 3: Cross multiply
    21,951.52x = 32,898.56 × 8,813.11
  4. Step 4: Simplify right side
    21,951.52x = 289,938,628.12
  5. Step 5: Solve for x
    x = 289,938,628.12/21,951.52
  6. Step 6: Final answer
    x = 13,208.13

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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.