Home / 12,188.70-18,284.19-3,423.57

Finding the Fourth Proportional to 12,188.70, 18,284.19 and 3,423.57

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Solution

The fourth proportional to 12,188.70, 18,284.19 and 3,423.57 is: 5,135.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.70 : 18,284.19 = 3,423.57 : x
  2. Step 2: Convert to fraction form
    12,188.70/18,284.19 = 3,423.57/x
  3. Step 3: Cross multiply
    12,188.70x = 18,284.19 × 3,423.57
  4. Step 4: Simplify right side
    12,188.70x = 62,597,204.36
  5. Step 5: Solve for x
    x = 62,597,204.36/12,188.70
  6. Step 6: Final answer
    x = 5,135.68

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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.