Home / 20,066.16-27,690.38-11,112.96

Finding the Fourth Proportional to 20,066.16, 27,690.38 and 11,112.96

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Solution

The fourth proportional to 20,066.16, 27,690.38 and 11,112.96 is: 15,335.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,066.16 : 27,690.38 = 11,112.96 : x
  2. Step 2: Convert to fraction form
    20,066.16/27,690.38 = 11,112.96/x
  3. Step 3: Cross multiply
    20,066.16x = 27,690.38 × 11,112.96
  4. Step 4: Simplify right side
    20,066.16x = 307,722,029.76
  5. Step 5: Solve for x
    x = 307,722,029.76/20,066.16
  6. Step 6: Final answer
    x = 15,335.37

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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.