Home / 20,961.99-31,446.07-6,923.47

Finding the Fourth Proportional to 20,961.99, 31,446.07 and 6,923.47

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Solution

The fourth proportional to 20,961.99, 31,446.07 and 6,923.47 is: 10,386.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,961.99 : 31,446.07 = 6,923.47 : x
  2. Step 2: Convert to fraction form
    20,961.99/31,446.07 = 6,923.47/x
  3. Step 3: Cross multiply
    20,961.99x = 31,446.07 × 6,923.47
  4. Step 4: Simplify right side
    20,961.99x = 217,715,887.65
  5. Step 5: Solve for x
    x = 217,715,887.65/20,961.99
  6. Step 6: Final answer
    x = 10,386.22

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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.