Home / 20,136.15-27,794.22-12,966.15

Finding the Fourth Proportional to 20,136.15, 27,794.22 and 12,966.15

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Solution

The fourth proportional to 20,136.15, 27,794.22 and 12,966.15 is: 17,897.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.15 : 27,794.22 = 12,966.15 : x
  2. Step 2: Convert to fraction form
    20,136.15/27,794.22 = 12,966.15/x
  3. Step 3: Cross multiply
    20,136.15x = 27,794.22 × 12,966.15
  4. Step 4: Simplify right side
    20,136.15x = 360,384,025.65
  5. Step 5: Solve for x
    x = 360,384,025.65/20,136.15
  6. Step 6: Final answer
    x = 17,897.36

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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.