Home / 20,229.36-27,918.56-11,278.32

Finding the Fourth Proportional to 20,229.36, 27,918.56 and 11,278.32

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Solution

The fourth proportional to 20,229.36, 27,918.56 and 11,278.32 is: 15,565.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.36 : 27,918.56 = 11,278.32 : x
  2. Step 2: Convert to fraction form
    20,229.36/27,918.56 = 11,278.32/x
  3. Step 3: Cross multiply
    20,229.36x = 27,918.56 × 11,278.32
  4. Step 4: Simplify right side
    20,229.36x = 314,874,453.62
  5. Step 5: Solve for x
    x = 314,874,453.62/20,229.36
  6. Step 6: Final answer
    x = 15,565.22

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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.