Home / 18,771.92-28,167.48-8,381.36

Finding the Fourth Proportional to 18,771.92, 28,167.48 and 8,381.36

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Solution

The fourth proportional to 18,771.92, 28,167.48 and 8,381.36 is: 12,576.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.92 : 28,167.48 = 8,381.36 : x
  2. Step 2: Convert to fraction form
    18,771.92/28,167.48 = 8,381.36/x
  3. Step 3: Cross multiply
    18,771.92x = 28,167.48 × 8,381.36
  4. Step 4: Simplify right side
    18,771.92x = 236,081,790.17
  5. Step 5: Solve for x
    x = 236,081,790.17/18,771.92
  6. Step 6: Final answer
    x = 12,576.33

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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.