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Finding the Fourth Proportional to 13,299.70, 19,947.39 and 6,279.70

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Solution

The fourth proportional to 13,299.70, 19,947.39 and 6,279.70 is: 9,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.70 : 19,947.39 = 6,279.70 : x
  2. Step 2: Convert to fraction form
    13,299.70/19,947.39 = 6,279.70/x
  3. Step 3: Cross multiply
    13,299.70x = 19,947.39 × 6,279.70
  4. Step 4: Simplify right side
    13,299.70x = 125,263,624.98
  5. Step 5: Solve for x
    x = 125,263,624.98/13,299.70
  6. Step 6: Final answer
    x = 9,418.53

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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.