Home / 20,136.50-27,789.16-11,184.68

Finding the Fourth Proportional to 20,136.50, 27,789.16 and 11,184.68

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Solution

The fourth proportional to 20,136.50, 27,789.16 and 11,184.68 is: 15,435.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.50 : 27,789.16 = 11,184.68 : x
  2. Step 2: Convert to fraction form
    20,136.50/27,789.16 = 11,184.68/x
  3. Step 3: Cross multiply
    20,136.50x = 27,789.16 × 11,184.68
  4. Step 4: Simplify right side
    20,136.50x = 310,812,862.07
  5. Step 5: Solve for x
    x = 310,812,862.07/20,136.50
  6. Step 6: Final answer
    x = 15,435.30

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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.