Home / 20,169.04-27,821.91-12,100.55

Finding the Fourth Proportional to 20,169.04, 27,821.91 and 12,100.55

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Solution

The fourth proportional to 20,169.04, 27,821.91 and 12,100.55 is: 16,691.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.04 : 27,821.91 = 12,100.55 : x
  2. Step 2: Convert to fraction form
    20,169.04/27,821.91 = 12,100.55/x
  3. Step 3: Cross multiply
    20,169.04x = 27,821.91 × 12,100.55
  4. Step 4: Simplify right side
    20,169.04x = 336,660,423.65
  5. Step 5: Solve for x
    x = 336,660,423.65/20,169.04
  6. Step 6: Final answer
    x = 16,691.94

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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.