Home / 20,986.91-31,483.79-6,197.32

Finding the Fourth Proportional to 20,986.91, 31,483.79 and 6,197.32

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Solution

The fourth proportional to 20,986.91, 31,483.79 and 6,197.32 is: 9,296.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,986.91 : 31,483.79 = 6,197.32 : x
  2. Step 2: Convert to fraction form
    20,986.91/31,483.79 = 6,197.32/x
  3. Step 3: Cross multiply
    20,986.91x = 31,483.79 × 6,197.32
  4. Step 4: Simplify right side
    20,986.91x = 195,115,121.44
  5. Step 5: Solve for x
    x = 195,115,121.44/20,986.91
  6. Step 6: Final answer
    x = 9,296.99

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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.