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Finding the Fourth Proportional to 19,175.88, 28,763.82 and 11,399.88

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Solution

The fourth proportional to 19,175.88, 28,763.82 and 11,399.88 is: 17,099.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,175.88 : 28,763.82 = 11,399.88 : x
  2. Step 2: Convert to fraction form
    19,175.88/28,763.82 = 11,399.88/x
  3. Step 3: Cross multiply
    19,175.88x = 28,763.82 × 11,399.88
  4. Step 4: Simplify right side
    19,175.88x = 327,904,096.34
  5. Step 5: Solve for x
    x = 327,904,096.34/19,175.88
  6. Step 6: Final answer
    x = 17,099.82

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1.5x scale

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.