Home / 18,299.60-27,451.32-7,912.40

Finding the Fourth Proportional to 18,299.60, 27,451.32 and 7,912.40

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Solution

The fourth proportional to 18,299.60, 27,451.32 and 7,912.40 is: 11,869.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.60 : 27,451.32 = 7,912.40 : x
  2. Step 2: Convert to fraction form
    18,299.60/27,451.32 = 7,912.40/x
  3. Step 3: Cross multiply
    18,299.60x = 27,451.32 × 7,912.40
  4. Step 4: Simplify right side
    18,299.60x = 217,205,824.37
  5. Step 5: Solve for x
    x = 217,205,824.37/18,299.60
  6. Step 6: Final answer
    x = 11,869.43

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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.