Home / 11,407.44-15,736.50-7,872.60

Finding the Fourth Proportional to 11,407.44, 15,736.50 and 7,872.60

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Solution

The fourth proportional to 11,407.44, 15,736.50 and 7,872.60 is: 10,860.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,407.44 : 15,736.50 = 7,872.60 : x
  2. Step 2: Convert to fraction form
    11,407.44/15,736.50 = 7,872.60/x
  3. Step 3: Cross multiply
    11,407.44x = 15,736.50 × 7,872.60
  4. Step 4: Simplify right side
    11,407.44x = 123,887,169.90
  5. Step 5: Solve for x
    x = 123,887,169.90/11,407.44
  6. Step 6: Final answer
    x = 10,860.21

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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.