Home / 20,220.80-27,904.32-11,268.11

Finding the Fourth Proportional to 20,220.80, 27,904.32 and 11,268.11

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Solution

The fourth proportional to 20,220.80, 27,904.32 and 11,268.11 is: 15,549.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.80 : 27,904.32 = 11,268.11 : x
  2. Step 2: Convert to fraction form
    20,220.80/27,904.32 = 11,268.11/x
  3. Step 3: Cross multiply
    20,220.80x = 27,904.32 × 11,268.11
  4. Step 4: Simplify right side
    20,220.80x = 314,428,947.24
  5. Step 5: Solve for x
    x = 314,428,947.24/20,220.80
  6. Step 6: Final answer
    x = 15,549.78

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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.