Home / 20,936.45-31,367.75-11,053.91

Finding the Fourth Proportional to 20,936.45, 31,367.75 and 11,053.91

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Solution

The fourth proportional to 20,936.45, 31,367.75 and 11,053.91 is: 16,561.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.45 : 31,367.75 = 11,053.91 : x
  2. Step 2: Convert to fraction form
    20,936.45/31,367.75 = 11,053.91/x
  3. Step 3: Cross multiply
    20,936.45x = 31,367.75 × 11,053.91
  4. Step 4: Simplify right side
    20,936.45x = 346,736,073.29
  5. Step 5: Solve for x
    x = 346,736,073.29/20,936.45
  6. Step 6: Final answer
    x = 16,561.36

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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.