Home / 20,894.06-31,349.04-12,579.98

Finding the Fourth Proportional to 20,894.06, 31,349.04 and 12,579.98

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Solution

The fourth proportional to 20,894.06, 31,349.04 and 12,579.98 is: 18,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,894.06 : 31,349.04 = 12,579.98 : x
  2. Step 2: Convert to fraction form
    20,894.06/31,349.04 = 12,579.98/x
  3. Step 3: Cross multiply
    20,894.06x = 31,349.04 × 12,579.98
  4. Step 4: Simplify right side
    20,894.06x = 394,370,296.22
  5. Step 5: Solve for x
    x = 394,370,296.22/20,894.06
  6. Step 6: Final answer
    x = 18,874.76

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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.