Home / 18,772.21-28,190.55-16,668.61

Finding the Fourth Proportional to 18,772.21, 28,190.55 and 16,668.61

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Solution

The fourth proportional to 18,772.21, 28,190.55 and 16,668.61 is: 25,031.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.21 : 28,190.55 = 16,668.61 : x
  2. Step 2: Convert to fraction form
    18,772.21/28,190.55 = 16,668.61/x
  3. Step 3: Cross multiply
    18,772.21x = 28,190.55 × 16,668.61
  4. Step 4: Simplify right side
    18,772.21x = 469,897,283.64
  5. Step 5: Solve for x
    x = 469,897,283.64/18,772.21
  6. Step 6: Final answer
    x = 25,031.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.