Home / 12,439.44-18,644.34-8,670.85

Finding the Fourth Proportional to 12,439.44, 18,644.34 and 8,670.85

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Solution

The fourth proportional to 12,439.44, 18,644.34 and 8,670.85 is: 12,995.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.44 : 18,644.34 = 8,670.85 : x
  2. Step 2: Convert to fraction form
    12,439.44/18,644.34 = 8,670.85/x
  3. Step 3: Cross multiply
    12,439.44x = 18,644.34 × 8,670.85
  4. Step 4: Simplify right side
    12,439.44x = 161,662,261.39
  5. Step 5: Solve for x
    x = 161,662,261.39/12,439.44
  6. Step 6: Final answer
    x = 12,995.94

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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.