Home / 20,201-27,877.38-11,819.12

Finding the Fourth Proportional to 20,201, 27,877.38 and 11,819.12

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Solution

The fourth proportional to 20,201, 27,877.38 and 11,819.12 is: 16,310.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201 : 27,877.38 = 11,819.12 : x
  2. Step 2: Convert to fraction form
    20,201/27,877.38 = 11,819.12/x
  3. Step 3: Cross multiply
    20,201x = 27,877.38 × 11,819.12
  4. Step 4: Simplify right side
    20,201x = 329,486,099.51
  5. Step 5: Solve for x
    x = 329,486,099.51/20,201
  6. Step 6: Final answer
    x = 16,310.39

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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.