Home / 20,220.16-27,906.08-11,268.48

Finding the Fourth Proportional to 20,220.16, 27,906.08 and 11,268.48

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Solution

The fourth proportional to 20,220.16, 27,906.08 and 11,268.48 is: 15,551.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.16 : 27,906.08 = 11,268.48 : x
  2. Step 2: Convert to fraction form
    20,220.16/27,906.08 = 11,268.48/x
  3. Step 3: Cross multiply
    20,220.16x = 27,906.08 × 11,268.48
  4. Step 4: Simplify right side
    20,220.16x = 314,459,104.36
  5. Step 5: Solve for x
    x = 314,459,104.36/20,220.16
  6. Step 6: Final answer
    x = 15,551.76

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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.