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Finding the Fourth Proportional to 19,254, 28,876.85 and 11,243.42

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Solution

The fourth proportional to 19,254, 28,876.85 and 11,243.42 is: 16,862.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,254 : 28,876.85 = 11,243.42 : x
  2. Step 2: Convert to fraction form
    19,254/28,876.85 = 11,243.42/x
  3. Step 3: Cross multiply
    19,254x = 28,876.85 × 11,243.42
  4. Step 4: Simplify right side
    19,254x = 324,674,552.83
  5. Step 5: Solve for x
    x = 324,674,552.83/19,254
  6. Step 6: Final answer
    x = 16,862.71

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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.