Home / 20,858.40-31,287.68-6,067.36

Finding the Fourth Proportional to 20,858.40, 31,287.68 and 6,067.36

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Solution

The fourth proportional to 20,858.40, 31,287.68 and 6,067.36 is: 9,101.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.40 : 31,287.68 = 6,067.36 : x
  2. Step 2: Convert to fraction form
    20,858.40/31,287.68 = 6,067.36/x
  3. Step 3: Cross multiply
    20,858.40x = 31,287.68 × 6,067.36
  4. Step 4: Simplify right side
    20,858.40x = 189,833,618.12
  5. Step 5: Solve for x
    x = 189,833,618.12/20,858.40
  6. Step 6: Final answer
    x = 9,101.06

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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.