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Finding the Fourth Proportional to 12,260.88, 16,918.86 and 8,287.35

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Solution

The fourth proportional to 12,260.88, 16,918.86 and 8,287.35 is: 11,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.88 : 16,918.86 = 8,287.35 : x
  2. Step 2: Convert to fraction form
    12,260.88/16,918.86 = 8,287.35/x
  3. Step 3: Cross multiply
    12,260.88x = 16,918.86 × 8,287.35
  4. Step 4: Simplify right side
    12,260.88x = 140,212,514.42
  5. Step 5: Solve for x
    x = 140,212,514.42/12,260.88
  6. Step 6: Final answer
    x = 11,435.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.