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Finding the Fourth Proportional to 19,254.88, 28,866.08 and 11,859.04

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Solution

The fourth proportional to 19,254.88, 28,866.08 and 11,859.04 is: 17,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254.88 : 28,866.08 = 11,859.04 : x
  2. Step 2: Convert to fraction form
    19,254.88/28,866.08 = 11,859.04/x
  3. Step 3: Cross multiply
    19,254.88x = 28,866.08 × 11,859.04
  4. Step 4: Simplify right side
    19,254.88x = 342,323,997.36
  5. Step 5: Solve for x
    x = 342,323,997.36/19,254.88
  6. Step 6: Final answer
    x = 17,778.56

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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.