Home / 13,259.39-19,889.78-3,398.75

Finding the Fourth Proportional to 13,259.39, 19,889.78 and 3,398.75

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Solution

The fourth proportional to 13,259.39, 19,889.78 and 3,398.75 is: 5,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.39 : 19,889.78 = 3,398.75 : x
  2. Step 2: Convert to fraction form
    13,259.39/19,889.78 = 3,398.75/x
  3. Step 3: Cross multiply
    13,259.39x = 19,889.78 × 3,398.75
  4. Step 4: Simplify right side
    13,259.39x = 67,600,273.33
  5. Step 5: Solve for x
    x = 67,600,273.33/13,259.39
  6. Step 6: Final answer
    x = 5,098.30

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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.