Home / 20,230.36-27,919.94-11,279.32

Finding the Fourth Proportional to 20,230.36, 27,919.94 and 11,279.32

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Solution

The fourth proportional to 20,230.36, 27,919.94 and 11,279.32 is: 15,566.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.36 : 27,919.94 = 11,279.32 : x
  2. Step 2: Convert to fraction form
    20,230.36/27,919.94 = 11,279.32/x
  3. Step 3: Cross multiply
    20,230.36x = 27,919.94 × 11,279.32
  4. Step 4: Simplify right side
    20,230.36x = 314,917,937.64
  5. Step 5: Solve for x
    x = 314,917,937.64/20,230.36
  6. Step 6: Final answer
    x = 15,566.60

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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.