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Finding the Fourth Proportional to 19,004.00, 28,490.65 and 7,919.03

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Solution

The fourth proportional to 19,004.00, 28,490.65 and 7,919.03 is: 11,872.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,004.00 : 28,490.65 = 7,919.03 : x
  2. Step 2: Convert to fraction form
    19,004.00/28,490.65 = 7,919.03/x
  3. Step 3: Cross multiply
    19,004.00x = 28,490.65 × 7,919.03
  4. Step 4: Simplify right side
    19,004.00x = 225,618,363.50
  5. Step 5: Solve for x
    x = 225,618,363.50/19,004.00
  6. Step 6: Final answer
    x = 11,872.15

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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.