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Finding the Fourth Proportional to 19,294.25, 28,947.65 and 8,763.03

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Solution

The fourth proportional to 19,294.25, 28,947.65 and 8,763.03 is: 13,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,294.25 : 28,947.65 = 8,763.03 : x
  2. Step 2: Convert to fraction form
    19,294.25/28,947.65 = 8,763.03/x
  3. Step 3: Cross multiply
    19,294.25x = 28,947.65 × 8,763.03
  4. Step 4: Simplify right side
    19,294.25x = 253,669,081.56
  5. Step 5: Solve for x
    x = 253,669,081.56/19,294.25
  6. Step 6: Final answer
    x = 13,147.40

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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.