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Finding the Fourth Proportional to 12,364.56, 17,055.42 and 8,115.90

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Solution

The fourth proportional to 12,364.56, 17,055.42 and 8,115.90 is: 11,194.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.56 : 17,055.42 = 8,115.90 : x
  2. Step 2: Convert to fraction form
    12,364.56/17,055.42 = 8,115.90/x
  3. Step 3: Cross multiply
    12,364.56x = 17,055.42 × 8,115.90
  4. Step 4: Simplify right side
    12,364.56x = 138,420,083.18
  5. Step 5: Solve for x
    x = 138,420,083.18/12,364.56
  6. Step 6: Final answer
    x = 11,194.91

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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.