Home / 20,707.76-31,029.24-11,339.84

Finding the Fourth Proportional to 20,707.76, 31,029.24 and 11,339.84

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Solution

The fourth proportional to 20,707.76, 31,029.24 and 11,339.84 is: 16,992.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,707.76 : 31,029.24 = 11,339.84 : x
  2. Step 2: Convert to fraction form
    20,707.76/31,029.24 = 11,339.84/x
  3. Step 3: Cross multiply
    20,707.76x = 31,029.24 × 11,339.84
  4. Step 4: Simplify right side
    20,707.76x = 351,866,616.92
  5. Step 5: Solve for x
    x = 351,866,616.92/20,707.76
  6. Step 6: Final answer
    x = 16,992.02

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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.