Home / 20,922.52-31,388.70-6,131.08

Finding the Fourth Proportional to 20,922.52, 31,388.70 and 6,131.08

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Solution

The fourth proportional to 20,922.52, 31,388.70 and 6,131.08 is: 9,198.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,922.52 : 31,388.70 = 6,131.08 : x
  2. Step 2: Convert to fraction form
    20,922.52/31,388.70 = 6,131.08/x
  3. Step 3: Cross multiply
    20,922.52x = 31,388.70 × 6,131.08
  4. Step 4: Simplify right side
    20,922.52x = 192,446,630.80
  5. Step 5: Solve for x
    x = 192,446,630.80/20,922.52
  6. Step 6: Final answer
    x = 9,198.06

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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.