Home / 15,939.20-23,919.60-7,169.60

Finding the Fourth Proportional to 15,939.20, 23,919.60 and 7,169.60

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Solution

The fourth proportional to 15,939.20, 23,919.60 and 7,169.60 is: 10,759.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.20 : 23,919.60 = 7,169.60 : x
  2. Step 2: Convert to fraction form
    15,939.20/23,919.60 = 7,169.60/x
  3. Step 3: Cross multiply
    15,939.20x = 23,919.60 × 7,169.60
  4. Step 4: Simplify right side
    15,939.20x = 171,493,964.16
  5. Step 5: Solve for x
    x = 171,493,964.16/15,939.20
  6. Step 6: Final answer
    x = 10,759.26

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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.