Home / 15,816.20-23,728.19-11,145.33

Finding the Fourth Proportional to 15,816.20, 23,728.19 and 11,145.33

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Solution

The fourth proportional to 15,816.20, 23,728.19 and 11,145.33 is: 16,720.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,816.20 : 23,728.19 = 11,145.33 : x
  2. Step 2: Convert to fraction form
    15,816.20/23,728.19 = 11,145.33/x
  3. Step 3: Cross multiply
    15,816.20x = 23,728.19 × 11,145.33
  4. Step 4: Simplify right side
    15,816.20x = 264,458,452.13
  5. Step 5: Solve for x
    x = 264,458,452.13/15,816.20
  6. Step 6: Final answer
    x = 16,720.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.