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Finding the Fourth Proportional to 12,316.52, 18,474.78 and 5,745.80

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Solution

The fourth proportional to 12,316.52, 18,474.78 and 5,745.80 is: 8,618.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,316.52 : 18,474.78 = 5,745.80 : x
  2. Step 2: Convert to fraction form
    12,316.52/18,474.78 = 5,745.80/x
  3. Step 3: Cross multiply
    12,316.52x = 18,474.78 × 5,745.80
  4. Step 4: Simplify right side
    12,316.52x = 106,152,390.92
  5. Step 5: Solve for x
    x = 106,152,390.92/12,316.52
  6. Step 6: Final answer
    x = 8,618.70

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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.