Home / 20,220.85-27,904.39-11,268.16

Finding the Fourth Proportional to 20,220.85, 27,904.39 and 11,268.16

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Solution

The fourth proportional to 20,220.85, 27,904.39 and 11,268.16 is: 15,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.85 : 27,904.39 = 11,268.16 : x
  2. Step 2: Convert to fraction form
    20,220.85/27,904.39 = 11,268.16/x
  3. Step 3: Cross multiply
    20,220.85x = 27,904.39 × 11,268.16
  4. Step 4: Simplify right side
    20,220.85x = 314,431,131.22
  5. Step 5: Solve for x
    x = 314,431,131.22/20,220.85
  6. Step 6: Final answer
    x = 15,549.85

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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.