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Finding the Fourth Proportional to 18,964, 28,433.04 and 11,571.04

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Solution

The fourth proportional to 18,964, 28,433.04 and 11,571.04 is: 17,348.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,964 : 28,433.04 = 11,571.04 : x
  2. Step 2: Convert to fraction form
    18,964/28,433.04 = 11,571.04/x
  3. Step 3: Cross multiply
    18,964x = 28,433.04 × 11,571.04
  4. Step 4: Simplify right side
    18,964x = 328,999,843.16
  5. Step 5: Solve for x
    x = 328,999,843.16/18,964
  6. Step 6: Final answer
    x = 17,348.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.