Home / 19,209.75-28,819.48-8,110.72

Finding the Fourth Proportional to 19,209.75, 28,819.48 and 8,110.72

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Solution

The fourth proportional to 19,209.75, 28,819.48 and 8,110.72 is: 12,168.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.75 : 28,819.48 = 8,110.72 : x
  2. Step 2: Convert to fraction form
    19,209.75/28,819.48 = 8,110.72/x
  3. Step 3: Cross multiply
    19,209.75x = 28,819.48 × 8,110.72
  4. Step 4: Simplify right side
    19,209.75x = 233,746,732.83
  5. Step 5: Solve for x
    x = 233,746,732.83/19,209.75
  6. Step 6: Final answer
    x = 12,168.13

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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.