Home / 15,986.70-23,979.83-7,221.60

Finding the Fourth Proportional to 15,986.70, 23,979.83 and 7,221.60

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Solution

The fourth proportional to 15,986.70, 23,979.83 and 7,221.60 is: 10,832.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.70 : 23,979.83 = 7,221.60 : x
  2. Step 2: Convert to fraction form
    15,986.70/23,979.83 = 7,221.60/x
  3. Step 3: Cross multiply
    15,986.70x = 23,979.83 × 7,221.60
  4. Step 4: Simplify right side
    15,986.70x = 173,172,704.22
  5. Step 5: Solve for x
    x = 173,172,704.22/15,986.70
  6. Step 6: Final answer
    x = 10,832.30

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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.