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Finding the Fourth Proportional to 11,957.46, 18,005.69 and 8,859.48

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Solution

The fourth proportional to 11,957.46, 18,005.69 and 8,859.48 is: 13,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,957.46 : 18,005.69 = 8,859.48 : x
  2. Step 2: Convert to fraction form
    11,957.46/18,005.69 = 8,859.48/x
  3. Step 3: Cross multiply
    11,957.46x = 18,005.69 × 8,859.48
  4. Step 4: Simplify right side
    11,957.46x = 159,521,006.14
  5. Step 5: Solve for x
    x = 159,521,006.14/11,957.46
  6. Step 6: Final answer
    x = 13,340.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.