Home / 20,181.99-27,839.30-13,113.09

Finding the Fourth Proportional to 20,181.99, 27,839.30 and 13,113.09

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Solution

The fourth proportional to 20,181.99, 27,839.30 and 13,113.09 is: 18,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.99 : 27,839.30 = 13,113.09 : x
  2. Step 2: Convert to fraction form
    20,181.99/27,839.30 = 13,113.09/x
  3. Step 3: Cross multiply
    20,181.99x = 27,839.30 × 13,113.09
  4. Step 4: Simplify right side
    20,181.99x = 365,059,180.87
  5. Step 5: Solve for x
    x = 365,059,180.87/20,181.99
  6. Step 6: Final answer
    x = 18,088.36

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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.