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Finding the Fourth Proportional to 21,808.83, 32,717.72 and 8,481.51

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Solution

The fourth proportional to 21,808.83, 32,717.72 and 8,481.51 is: 12,724.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.83 : 32,717.72 = 8,481.51 : x
  2. Step 2: Convert to fraction form
    21,808.83/32,717.72 = 8,481.51/x
  3. Step 3: Cross multiply
    21,808.83x = 32,717.72 × 8,481.51
  4. Step 4: Simplify right side
    21,808.83x = 277,495,669.36
  5. Step 5: Solve for x
    x = 277,495,669.36/21,808.83
  6. Step 6: Final answer
    x = 12,724.01

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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.