Home / 20,087.90-27,720.83-11,590.04

Finding the Fourth Proportional to 20,087.90, 27,720.83 and 11,590.04

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Solution

The fourth proportional to 20,087.90, 27,720.83 and 11,590.04 is: 15,993.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.90 : 27,720.83 = 11,590.04 : x
  2. Step 2: Convert to fraction form
    20,087.90/27,720.83 = 11,590.04/x
  3. Step 3: Cross multiply
    20,087.90x = 27,720.83 × 11,590.04
  4. Step 4: Simplify right side
    20,087.90x = 321,285,470.58
  5. Step 5: Solve for x
    x = 321,285,470.58/20,087.90
  6. Step 6: Final answer
    x = 15,993.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.