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Finding the Fourth Proportional to 11,876.58, 17,821.07 and 8,616.57

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Solution

The fourth proportional to 11,876.58, 17,821.07 and 8,616.57 is: 12,929.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,876.58 : 17,821.07 = 8,616.57 : x
  2. Step 2: Convert to fraction form
    11,876.58/17,821.07 = 8,616.57/x
  3. Step 3: Cross multiply
    11,876.58x = 17,821.07 × 8,616.57
  4. Step 4: Simplify right side
    11,876.58x = 153,556,454.05
  5. Step 5: Solve for x
    x = 153,556,454.05/11,876.58
  6. Step 6: Final answer
    x = 12,929.35

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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.