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Finding the Fourth Proportional to 21,660.88, 32,492.52 and 6,871

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Solution

The fourth proportional to 21,660.88, 32,492.52 and 6,871 is: 10,306.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.88 : 32,492.52 = 6,871 : x
  2. Step 2: Convert to fraction form
    21,660.88/32,492.52 = 6,871/x
  3. Step 3: Cross multiply
    21,660.88x = 32,492.52 × 6,871
  4. Step 4: Simplify right side
    21,660.88x = 223,256,104.92
  5. Step 5: Solve for x
    x = 223,256,104.92/21,660.88
  6. Step 6: Final answer
    x = 10,306.88

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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.