Home / 20,136.38-27,788.99-11,184.56

Finding the Fourth Proportional to 20,136.38, 27,788.99 and 11,184.56

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Solution

The fourth proportional to 20,136.38, 27,788.99 and 11,184.56 is: 15,435.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.38 : 27,788.99 = 11,184.56 : x
  2. Step 2: Convert to fraction form
    20,136.38/27,788.99 = 11,184.56/x
  3. Step 3: Cross multiply
    20,136.38x = 27,788.99 × 11,184.56
  4. Step 4: Simplify right side
    20,136.38x = 310,807,639.54
  5. Step 5: Solve for x
    x = 310,807,639.54/20,136.38
  6. Step 6: Final answer
    x = 15,435.13

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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.