Home / 13,208.62-19,805.65-5,422.90

Finding the Fourth Proportional to 13,208.62, 19,805.65 and 5,422.90

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Solution

The fourth proportional to 13,208.62, 19,805.65 and 5,422.90 is: 8,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,208.62 : 19,805.65 = 5,422.90 : x
  2. Step 2: Convert to fraction form
    13,208.62/19,805.65 = 5,422.90/x
  3. Step 3: Cross multiply
    13,208.62x = 19,805.65 × 5,422.90
  4. Step 4: Simplify right side
    13,208.62x = 107,404,059.39
  5. Step 5: Solve for x
    x = 107,404,059.39/13,208.62
  6. Step 6: Final answer
    x = 8,131.36

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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.