Home / 21,136.24-29,181-15,163.12

Finding the Fourth Proportional to 21,136.24, 29,181 and 15,163.12

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Solution

The fourth proportional to 21,136.24, 29,181 and 15,163.12 is: 20,934.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.24 : 29,181 = 15,163.12 : x
  2. Step 2: Convert to fraction form
    21,136.24/29,181 = 15,163.12/x
  3. Step 3: Cross multiply
    21,136.24x = 29,181 × 15,163.12
  4. Step 4: Simplify right side
    21,136.24x = 442,475,004.72
  5. Step 5: Solve for x
    x = 442,475,004.72/21,136.24
  6. Step 6: Final answer
    x = 20,934.42

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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.