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Finding the Fourth Proportional to 21,596.59, 32,394.89 and 8,439.74

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Solution

The fourth proportional to 21,596.59, 32,394.89 and 8,439.74 is: 12,659.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,596.59 : 32,394.89 = 8,439.74 : x
  2. Step 2: Convert to fraction form
    21,596.59/32,394.89 = 8,439.74/x
  3. Step 3: Cross multiply
    21,596.59x = 32,394.89 × 8,439.74
  4. Step 4: Simplify right side
    21,596.59x = 273,404,429.53
  5. Step 5: Solve for x
    x = 273,404,429.53/21,596.59
  6. Step 6: Final answer
    x = 12,659.61

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Similar ratio
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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.