Home / 20,217.05-27,884.62-13,499.45

Finding the Fourth Proportional to 20,217.05, 27,884.62 and 13,499.45

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Solution

The fourth proportional to 20,217.05, 27,884.62 and 13,499.45 is: 18,619.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.05 : 27,884.62 = 13,499.45 : x
  2. Step 2: Convert to fraction form
    20,217.05/27,884.62 = 13,499.45/x
  3. Step 3: Cross multiply
    20,217.05x = 27,884.62 × 13,499.45
  4. Step 4: Simplify right side
    20,217.05x = 376,427,033.46
  5. Step 5: Solve for x
    x = 376,427,033.46/20,217.05
  6. Step 6: Final answer
    x = 18,619.29

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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.