Home / 20,140.57-27,794.01-11,188.91

Finding the Fourth Proportional to 20,140.57, 27,794.01 and 11,188.91

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Solution

The fourth proportional to 20,140.57, 27,794.01 and 11,188.91 is: 15,440.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.57 : 27,794.01 = 11,188.91 : x
  2. Step 2: Convert to fraction form
    20,140.57/27,794.01 = 11,188.91/x
  3. Step 3: Cross multiply
    20,140.57x = 27,794.01 × 11,188.91
  4. Step 4: Simplify right side
    20,140.57x = 310,984,676.43
  5. Step 5: Solve for x
    x = 310,984,676.43/20,140.57
  6. Step 6: Final answer
    x = 15,440.71

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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.