Home / 20,290.16-27,999.61-11,791.88

Finding the Fourth Proportional to 20,290.16, 27,999.61 and 11,791.88

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Solution

The fourth proportional to 20,290.16, 27,999.61 and 11,791.88 is: 16,272.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.16 : 27,999.61 = 11,791.88 : x
  2. Step 2: Convert to fraction form
    20,290.16/27,999.61 = 11,791.88/x
  3. Step 3: Cross multiply
    20,290.16x = 27,999.61 × 11,791.88
  4. Step 4: Simplify right side
    20,290.16x = 330,168,026.43
  5. Step 5: Solve for x
    x = 330,168,026.43/20,290.16
  6. Step 6: Final answer
    x = 16,272.32

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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.