Home / 12,108.79-18,164.22-3,343.70

Finding the Fourth Proportional to 12,108.79, 18,164.22 and 3,343.70

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Solution

The fourth proportional to 12,108.79, 18,164.22 and 3,343.70 is: 5,015.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.79 : 18,164.22 = 3,343.70 : x
  2. Step 2: Convert to fraction form
    12,108.79/18,164.22 = 3,343.70/x
  3. Step 3: Cross multiply
    12,108.79x = 18,164.22 × 3,343.70
  4. Step 4: Simplify right side
    12,108.79x = 60,735,702.41
  5. Step 5: Solve for x
    x = 60,735,702.41/12,108.79
  6. Step 6: Final answer
    x = 5,015.84

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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.