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Finding the Fourth Proportional to 12,260.19, 16,918.50 and 8,009.21

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Solution

The fourth proportional to 12,260.19, 16,918.50 and 8,009.21 is: 11,052.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,260.19 : 16,918.50 = 8,009.21 : x
  2. Step 2: Convert to fraction form
    12,260.19/16,918.50 = 8,009.21/x
  3. Step 3: Cross multiply
    12,260.19x = 16,918.50 × 8,009.21
  4. Step 4: Simplify right side
    12,260.19x = 135,503,891.72
  5. Step 5: Solve for x
    x = 135,503,891.72/12,260.19
  6. Step 6: Final answer
    x = 11,052.35

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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.