Home / 12,740.70-19,110.37-3,974.61

Finding the Fourth Proportional to 12,740.70, 19,110.37 and 3,974.61

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Solution

The fourth proportional to 12,740.70, 19,110.37 and 3,974.61 is: 5,961.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,740.70 : 19,110.37 = 3,974.61 : x
  2. Step 2: Convert to fraction form
    12,740.70/19,110.37 = 3,974.61/x
  3. Step 3: Cross multiply
    12,740.70x = 19,110.37 × 3,974.61
  4. Step 4: Simplify right side
    12,740.70x = 75,956,186.11
  5. Step 5: Solve for x
    x = 75,956,186.11/12,740.70
  6. Step 6: Final answer
    x = 5,961.70

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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.