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Finding the Fourth Proportional to 21,908.60, 32,866.20 and 8,056.52

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Solution

The fourth proportional to 21,908.60, 32,866.20 and 8,056.52 is: 12,085.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,908.60 : 32,866.20 = 8,056.52 : x
  2. Step 2: Convert to fraction form
    21,908.60/32,866.20 = 8,056.52/x
  3. Step 3: Cross multiply
    21,908.60x = 32,866.20 × 8,056.52
  4. Step 4: Simplify right side
    21,908.60x = 264,787,197.62
  5. Step 5: Solve for x
    x = 264,787,197.62/21,908.60
  6. Step 6: Final answer
    x = 12,085.99

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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.