Home / 20,716.25-31,053.09-11,813.37

Finding the Fourth Proportional to 20,716.25, 31,053.09 and 11,813.37

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Solution

The fourth proportional to 20,716.25, 31,053.09 and 11,813.37 is: 17,707.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.25 : 31,053.09 = 11,813.37 : x
  2. Step 2: Convert to fraction form
    20,716.25/31,053.09 = 11,813.37/x
  3. Step 3: Cross multiply
    20,716.25x = 31,053.09 × 11,813.37
  4. Step 4: Simplify right side
    20,716.25x = 366,841,641.81
  5. Step 5: Solve for x
    x = 366,841,641.81/20,716.25
  6. Step 6: Final answer
    x = 17,707.92

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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.