Home / 19,005.97-28,514.18-7,917.85

Finding the Fourth Proportional to 19,005.97, 28,514.18 and 7,917.85

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Solution

The fourth proportional to 19,005.97, 28,514.18 and 7,917.85 is: 11,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.97 : 28,514.18 = 7,917.85 : x
  2. Step 2: Convert to fraction form
    19,005.97/28,514.18 = 7,917.85/x
  3. Step 3: Cross multiply
    19,005.97x = 28,514.18 × 7,917.85
  4. Step 4: Simplify right side
    19,005.97x = 225,771,000.11
  5. Step 5: Solve for x
    x = 225,771,000.11/19,005.97
  6. Step 6: Final answer
    x = 11,878.95

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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.