Home / 15,144.13-20,922.61-11,571.60

Finding the Fourth Proportional to 15,144.13, 20,922.61 and 11,571.60

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Solution

The fourth proportional to 15,144.13, 20,922.61 and 11,571.60 is: 15,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,144.13 : 20,922.61 = 11,571.60 : x
  2. Step 2: Convert to fraction form
    15,144.13/20,922.61 = 11,571.60/x
  3. Step 3: Cross multiply
    15,144.13x = 20,922.61 × 11,571.60
  4. Step 4: Simplify right side
    15,144.13x = 242,108,073.88
  5. Step 5: Solve for x
    x = 242,108,073.88/15,144.13
  6. Step 6: Final answer
    x = 15,986.93

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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.