Home / 20,136.79-27,790.01-11,184.36

Finding the Fourth Proportional to 20,136.79, 27,790.01 and 11,184.36

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Solution

The fourth proportional to 20,136.79, 27,790.01 and 11,184.36 is: 15,435.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.79 : 27,790.01 = 11,184.36 : x
  2. Step 2: Convert to fraction form
    20,136.79/27,790.01 = 11,184.36/x
  3. Step 3: Cross multiply
    20,136.79x = 27,790.01 × 11,184.36
  4. Step 4: Simplify right side
    20,136.79x = 310,813,476.24
  5. Step 5: Solve for x
    x = 310,813,476.24/20,136.79
  6. Step 6: Final answer
    x = 15,435.11

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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.