Home / 12,102.18-18,155.70-4,311.60

Finding the Fourth Proportional to 12,102.18, 18,155.70 and 4,311.60

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Solution

The fourth proportional to 12,102.18, 18,155.70 and 4,311.60 is: 6,468.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.18 : 18,155.70 = 4,311.60 : x
  2. Step 2: Convert to fraction form
    12,102.18/18,155.70 = 4,311.60/x
  3. Step 3: Cross multiply
    12,102.18x = 18,155.70 × 4,311.60
  4. Step 4: Simplify right side
    12,102.18x = 78,280,116.12
  5. Step 5: Solve for x
    x = 78,280,116.12/12,102.18
  6. Step 6: Final answer
    x = 6,468.27

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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.