Home / 15,223.11-20,982.78-10,185.54

Finding the Fourth Proportional to 15,223.11, 20,982.78 and 10,185.54

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Solution

The fourth proportional to 15,223.11, 20,982.78 and 10,185.54 is: 14,039.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,223.11 : 20,982.78 = 10,185.54 : x
  2. Step 2: Convert to fraction form
    15,223.11/20,982.78 = 10,185.54/x
  3. Step 3: Cross multiply
    15,223.11x = 20,982.78 × 10,185.54
  4. Step 4: Simplify right side
    15,223.11x = 213,720,945.00
  5. Step 5: Solve for x
    x = 213,720,945.00/15,223.11
  6. Step 6: Final answer
    x = 14,039.24

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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.