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Finding the Fourth Proportional to 21,753.78, 32,628.92 and 8,606.27

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Solution

The fourth proportional to 21,753.78, 32,628.92 and 8,606.27 is: 12,908.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.78 : 32,628.92 = 8,606.27 : x
  2. Step 2: Convert to fraction form
    21,753.78/32,628.92 = 8,606.27/x
  3. Step 3: Cross multiply
    21,753.78x = 32,628.92 × 8,606.27
  4. Step 4: Simplify right side
    21,753.78x = 280,813,089.15
  5. Step 5: Solve for x
    x = 280,813,089.15/21,753.78
  6. Step 6: Final answer
    x = 12,908.70

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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.