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Finding the Fourth Proportional to 12,187.54, 18,281.43 and 4,396.42

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Solution

The fourth proportional to 12,187.54, 18,281.43 and 4,396.42 is: 6,594.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.54 : 18,281.43 = 4,396.42 : x
  2. Step 2: Convert to fraction form
    12,187.54/18,281.43 = 4,396.42/x
  3. Step 3: Cross multiply
    12,187.54x = 18,281.43 × 4,396.42
  4. Step 4: Simplify right side
    12,187.54x = 80,372,844.48
  5. Step 5: Solve for x
    x = 80,372,844.48/12,187.54
  6. Step 6: Final answer
    x = 6,594.67

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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.