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Finding the Fourth Proportional to 19,098.75, 28,655.43 and 7,412.88

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Solution

The fourth proportional to 19,098.75, 28,655.43 and 7,412.88 is: 11,122.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,098.75 : 28,655.43 = 7,412.88 : x
  2. Step 2: Convert to fraction form
    19,098.75/28,655.43 = 7,412.88/x
  3. Step 3: Cross multiply
    19,098.75x = 28,655.43 × 7,412.88
  4. Step 4: Simplify right side
    19,098.75x = 212,419,263.94
  5. Step 5: Solve for x
    x = 212,419,263.94/19,098.75
  6. Step 6: Final answer
    x = 11,122.16

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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.