Home / 18,771.21-28,189.05-16,667.61

Finding the Fourth Proportional to 18,771.21, 28,189.05 and 16,667.61

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Solution

The fourth proportional to 18,771.21, 28,189.05 and 16,667.61 is: 25,030.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.21 : 28,189.05 = 16,667.61 : x
  2. Step 2: Convert to fraction form
    18,771.21/28,189.05 = 16,667.61/x
  3. Step 3: Cross multiply
    18,771.21x = 28,189.05 × 16,667.61
  4. Step 4: Simplify right side
    18,771.21x = 469,844,091.67
  5. Step 5: Solve for x
    x = 469,844,091.67/18,771.21
  6. Step 6: Final answer
    x = 25,030.04

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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.