Home / 20,140.76-27,794.60-11,189.08

Finding the Fourth Proportional to 20,140.76, 27,794.60 and 11,189.08

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Solution

The fourth proportional to 20,140.76, 27,794.60 and 11,189.08 is: 15,441.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.76 : 27,794.60 = 11,189.08 : x
  2. Step 2: Convert to fraction form
    20,140.76/27,794.60 = 11,189.08/x
  3. Step 3: Cross multiply
    20,140.76x = 27,794.60 × 11,189.08
  4. Step 4: Simplify right side
    20,140.76x = 310,996,002.97
  5. Step 5: Solve for x
    x = 310,996,002.97/20,140.76
  6. Step 6: Final answer
    x = 15,441.13

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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.