Home / 20,748.11-31,115.52-6,705.14

Finding the Fourth Proportional to 20,748.11, 31,115.52 and 6,705.14

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Solution

The fourth proportional to 20,748.11, 31,115.52 and 6,705.14 is: 10,055.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.11 : 31,115.52 = 6,705.14 : x
  2. Step 2: Convert to fraction form
    20,748.11/31,115.52 = 6,705.14/x
  3. Step 3: Cross multiply
    20,748.11x = 31,115.52 × 6,705.14
  4. Step 4: Simplify right side
    20,748.11x = 208,633,917.77
  5. Step 5: Solve for x
    x = 208,633,917.77/20,748.11
  6. Step 6: Final answer
    x = 10,055.56

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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.