Home / 20,992.70-31,479.60-6,196.52

Finding the Fourth Proportional to 20,992.70, 31,479.60 and 6,196.52

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Solution

The fourth proportional to 20,992.70, 31,479.60 and 6,196.52 is: 9,291.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992.70 : 31,479.60 = 6,196.52 : x
  2. Step 2: Convert to fraction form
    20,992.70/31,479.60 = 6,196.52/x
  3. Step 3: Cross multiply
    20,992.70x = 31,479.60 × 6,196.52
  4. Step 4: Simplify right side
    20,992.70x = 195,063,970.99
  5. Step 5: Solve for x
    x = 195,063,970.99/20,992.70
  6. Step 6: Final answer
    x = 9,291.99

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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.