Home / 20,839.40-31,259.42-6,799.36

Finding the Fourth Proportional to 20,839.40, 31,259.42 and 6,799.36

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Solution

The fourth proportional to 20,839.40, 31,259.42 and 6,799.36 is: 10,199.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.40 : 31,259.42 = 6,799.36 : x
  2. Step 2: Convert to fraction form
    20,839.40/31,259.42 = 6,799.36/x
  3. Step 3: Cross multiply
    20,839.40x = 31,259.42 × 6,799.36
  4. Step 4: Simplify right side
    20,839.40x = 212,544,049.97
  5. Step 5: Solve for x
    x = 212,544,049.97/20,839.40
  6. Step 6: Final answer
    x = 10,199.14

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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.