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Finding the Fourth Proportional to 21,908.70, 32,877.09 and 8,592.30

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Solution

The fourth proportional to 21,908.70, 32,877.09 and 8,592.30 is: 12,893.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.70 : 32,877.09 = 8,592.30 : x
  2. Step 2: Convert to fraction form
    21,908.70/32,877.09 = 8,592.30/x
  3. Step 3: Cross multiply
    21,908.70x = 32,877.09 × 8,592.30
  4. Step 4: Simplify right side
    21,908.70x = 282,489,820.41
  5. Step 5: Solve for x
    x = 282,489,820.41/21,908.70
  6. Step 6: Final answer
    x = 12,893.96

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1.5x scale

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.