Home / 20,180.82-27,887.94-15,136.28

Finding the Fourth Proportional to 20,180.82, 27,887.94 and 15,136.28

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Solution

The fourth proportional to 20,180.82, 27,887.94 and 15,136.28 is: 20,916.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.82 : 27,887.94 = 15,136.28 : x
  2. Step 2: Convert to fraction form
    20,180.82/27,887.94 = 15,136.28/x
  3. Step 3: Cross multiply
    20,180.82x = 27,887.94 × 15,136.28
  4. Step 4: Simplify right side
    20,180.82x = 422,119,668.46
  5. Step 5: Solve for x
    x = 422,119,668.46/20,180.82
  6. Step 6: Final answer
    x = 20,916.87

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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.