Home / 13,259.88-19,889.49-3,899.64

Finding the Fourth Proportional to 13,259.88, 19,889.49 and 3,899.64

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Solution

The fourth proportional to 13,259.88, 19,889.49 and 3,899.64 is: 5,849.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,259.88 : 19,889.49 = 3,899.64 : x
  2. Step 2: Convert to fraction form
    13,259.88/19,889.49 = 3,899.64/x
  3. Step 3: Cross multiply
    13,259.88x = 19,889.49 × 3,899.64
  4. Step 4: Simplify right side
    13,259.88x = 77,561,850.78
  5. Step 5: Solve for x
    x = 77,561,850.78/13,259.88
  6. Step 6: Final answer
    x = 5,849.36

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Double scale
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Similar ratio
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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.