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Finding the Fourth Proportional to 31,908, 44,033.04 and 18,660

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Solution

The fourth proportional to 31,908, 44,033.04 and 18,660 is: 25,750.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,908 : 44,033.04 = 18,660 : x
  2. Step 2: Convert to fraction form
    31,908/44,033.04 = 18,660/x
  3. Step 3: Cross multiply
    31,908x = 44,033.04 × 18,660
  4. Step 4: Simplify right side
    31,908x = 821,656,526.40
  5. Step 5: Solve for x
    x = 821,656,526.40/31,908
  6. Step 6: Final answer
    x = 25,750.80

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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.