Home / 20,140.85-27,794.37-11,189.17

Finding the Fourth Proportional to 20,140.85, 27,794.37 and 11,189.17

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Solution

The fourth proportional to 20,140.85, 27,794.37 and 11,189.17 is: 15,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.85 : 27,794.37 = 11,189.17 : x
  2. Step 2: Convert to fraction form
    20,140.85/27,794.37 = 11,189.17/x
  3. Step 3: Cross multiply
    20,140.85x = 27,794.37 × 11,189.17
  4. Step 4: Simplify right side
    20,140.85x = 310,996,007.68
  5. Step 5: Solve for x
    x = 310,996,007.68/20,140.85
  6. Step 6: Final answer
    x = 15,441.05

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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.