Home / 20,120.73-27,766.56-11,168.34

Finding the Fourth Proportional to 20,120.73, 27,766.56 and 11,168.34

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Solution

The fourth proportional to 20,120.73, 27,766.56 and 11,168.34 is: 15,412.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.73 : 27,766.56 = 11,168.34 : x
  2. Step 2: Convert to fraction form
    20,120.73/27,766.56 = 11,168.34/x
  3. Step 3: Cross multiply
    20,120.73x = 27,766.56 × 11,168.34
  4. Step 4: Simplify right side
    20,120.73x = 310,106,382.71
  5. Step 5: Solve for x
    x = 310,106,382.71/20,120.73
  6. Step 6: Final answer
    x = 15,412.28

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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.