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Finding the Fourth Proportional to 12,659.45, 18,917.17 and 9,476.33

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Solution

The fourth proportional to 12,659.45, 18,917.17 and 9,476.33 is: 14,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,659.45 : 18,917.17 = 9,476.33 : x
  2. Step 2: Convert to fraction form
    12,659.45/18,917.17 = 9,476.33/x
  3. Step 3: Cross multiply
    12,659.45x = 18,917.17 × 9,476.33
  4. Step 4: Simplify right side
    12,659.45x = 179,265,227.31
  5. Step 5: Solve for x
    x = 179,265,227.31/12,659.45
  6. Step 6: Final answer
    x = 14,160.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.