Home / 20,917.95-31,348.42-11,544

Finding the Fourth Proportional to 20,917.95, 31,348.42 and 11,544

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Solution

The fourth proportional to 20,917.95, 31,348.42 and 11,544 is: 17,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.95 : 31,348.42 = 11,544 : x
  2. Step 2: Convert to fraction form
    20,917.95/31,348.42 = 11,544/x
  3. Step 3: Cross multiply
    20,917.95x = 31,348.42 × 11,544
  4. Step 4: Simplify right side
    20,917.95x = 361,886,131.62
  5. Step 5: Solve for x
    x = 361,886,131.62/20,917.95
  6. Step 6: Final answer
    x = 17,300.27

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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.