Home / 15,185.09-20,949.12-10,082.99

Finding the Fourth Proportional to 15,185.09, 20,949.12 and 10,082.99

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Solution

The fourth proportional to 15,185.09, 20,949.12 and 10,082.99 is: 13,910.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,185.09 : 20,949.12 = 10,082.99 : x
  2. Step 2: Convert to fraction form
    15,185.09/20,949.12 = 10,082.99/x
  3. Step 3: Cross multiply
    15,185.09x = 20,949.12 × 10,082.99
  4. Step 4: Simplify right side
    15,185.09x = 211,229,662.72
  5. Step 5: Solve for x
    x = 211,229,662.72/15,185.09
  6. Step 6: Final answer
    x = 13,910.34

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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.