Home / 20,099.97-27,737.69-11,147.64

Finding the Fourth Proportional to 20,099.97, 27,737.69 and 11,147.64

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Solution

The fourth proportional to 20,099.97, 27,737.69 and 11,147.64 is: 15,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,099.97 : 27,737.69 = 11,147.64 : x
  2. Step 2: Convert to fraction form
    20,099.97/27,737.69 = 11,147.64/x
  3. Step 3: Cross multiply
    20,099.97x = 27,737.69 × 11,147.64
  4. Step 4: Simplify right side
    20,099.97x = 309,209,726.81
  5. Step 5: Solve for x
    x = 309,209,726.81/20,099.97
  6. Step 6: Final answer
    x = 15,383.59

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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.