Home / 15,743.26-21,723.49-8,670.15

Finding the Fourth Proportional to 15,743.26, 21,723.49 and 8,670.15

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Solution

The fourth proportional to 15,743.26, 21,723.49 and 8,670.15 is: 11,963.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.26 : 21,723.49 = 8,670.15 : x
  2. Step 2: Convert to fraction form
    15,743.26/21,723.49 = 8,670.15/x
  3. Step 3: Cross multiply
    15,743.26x = 21,723.49 × 8,670.15
  4. Step 4: Simplify right side
    15,743.26x = 188,345,786.53
  5. Step 5: Solve for x
    x = 188,345,786.53/15,743.26
  6. Step 6: Final answer
    x = 11,963.58

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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.