Home / 20,979.15-31,468.68-6,188.22

Finding the Fourth Proportional to 20,979.15, 31,468.68 and 6,188.22

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Solution

The fourth proportional to 20,979.15, 31,468.68 and 6,188.22 is: 9,282.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,979.15 : 31,468.68 = 6,188.22 : x
  2. Step 2: Convert to fraction form
    20,979.15/31,468.68 = 6,188.22/x
  3. Step 3: Cross multiply
    20,979.15x = 31,468.68 × 6,188.22
  4. Step 4: Simplify right side
    20,979.15x = 194,735,114.95
  5. Step 5: Solve for x
    x = 194,735,114.95/20,979.15
  6. Step 6: Final answer
    x = 9,282.32

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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.