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Finding the Fourth Proportional to 19,255, 28,878.35 and 11,244.42

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Solution

The fourth proportional to 19,255, 28,878.35 and 11,244.42 is: 16,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255 : 28,878.35 = 11,244.42 : x
  2. Step 2: Convert to fraction form
    19,255/28,878.35 = 11,244.42/x
  3. Step 3: Cross multiply
    19,255x = 28,878.35 × 11,244.42
  4. Step 4: Simplify right side
    19,255x = 324,720,296.31
  5. Step 5: Solve for x
    x = 324,720,296.31/19,255
  6. Step 6: Final answer
    x = 16,864.21

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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.