Home / 12,174.92-18,255.34-4,770.72

Finding the Fourth Proportional to 12,174.92, 18,255.34 and 4,770.72

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Solution

The fourth proportional to 12,174.92, 18,255.34 and 4,770.72 is: 7,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,174.92 : 18,255.34 = 4,770.72 : x
  2. Step 2: Convert to fraction form
    12,174.92/18,255.34 = 4,770.72/x
  3. Step 3: Cross multiply
    12,174.92x = 18,255.34 × 4,770.72
  4. Step 4: Simplify right side
    12,174.92x = 87,091,115.64
  5. Step 5: Solve for x
    x = 87,091,115.64/12,174.92
  6. Step 6: Final answer
    x = 7,153.32

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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.