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Finding the Fourth Proportional to 21,867.84, 32,801.76 and 6,285.48

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Solution

The fourth proportional to 21,867.84, 32,801.76 and 6,285.48 is: 9,428.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,867.84 : 32,801.76 = 6,285.48 : x
  2. Step 2: Convert to fraction form
    21,867.84/32,801.76 = 6,285.48/x
  3. Step 3: Cross multiply
    21,867.84x = 32,801.76 × 6,285.48
  4. Step 4: Simplify right side
    21,867.84x = 206,174,806.44
  5. Step 5: Solve for x
    x = 206,174,806.44/21,867.84
  6. Step 6: Final answer
    x = 9,428.22

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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.