Home / 20,949.06-31,419.81-8,468.58

Finding the Fourth Proportional to 20,949.06, 31,419.81 and 8,468.58

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Solution

The fourth proportional to 20,949.06, 31,419.81 and 8,468.58 is: 12,701.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.06 : 31,419.81 = 8,468.58 : x
  2. Step 2: Convert to fraction form
    20,949.06/31,419.81 = 8,468.58/x
  3. Step 3: Cross multiply
    20,949.06x = 31,419.81 × 8,468.58
  4. Step 4: Simplify right side
    20,949.06x = 266,081,174.57
  5. Step 5: Solve for x
    x = 266,081,174.57/20,949.06
  6. Step 6: Final answer
    x = 12,701.34

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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.