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Finding the Fourth Proportional to 10,596.60, 15,894.90 and 8,143.80

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Solution

The fourth proportional to 10,596.60, 15,894.90 and 8,143.80 is: 12,215.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,596.60 : 15,894.90 = 8,143.80 : x
  2. Step 2: Convert to fraction form
    10,596.60/15,894.90 = 8,143.80/x
  3. Step 3: Cross multiply
    10,596.60x = 15,894.90 × 8,143.80
  4. Step 4: Simplify right side
    10,596.60x = 129,444,886.62
  5. Step 5: Solve for x
    x = 129,444,886.62/10,596.60
  6. Step 6: Final answer
    x = 12,215.70

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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.