Home / 13,189.97-19,789.01-5,399.39

Finding the Fourth Proportional to 13,189.97, 19,789.01 and 5,399.39

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Solution

The fourth proportional to 13,189.97, 19,789.01 and 5,399.39 is: 8,100.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.97 : 19,789.01 = 5,399.39 : x
  2. Step 2: Convert to fraction form
    13,189.97/19,789.01 = 5,399.39/x
  3. Step 3: Cross multiply
    13,189.97x = 19,789.01 × 5,399.39
  4. Step 4: Simplify right side
    13,189.97x = 106,848,555.71
  5. Step 5: Solve for x
    x = 106,848,555.71/13,189.97
  6. Step 6: Final answer
    x = 8,100.74

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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.