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Finding the Fourth Proportional to 19,296.96, 28,942.20 and 8,763.72

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Solution

The fourth proportional to 19,296.96, 28,942.20 and 8,763.72 is: 13,144.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,296.96 : 28,942.20 = 8,763.72 : x
  2. Step 2: Convert to fraction form
    19,296.96/28,942.20 = 8,763.72/x
  3. Step 3: Cross multiply
    19,296.96x = 28,942.20 × 8,763.72
  4. Step 4: Simplify right side
    19,296.96x = 253,641,336.98
  5. Step 5: Solve for x
    x = 253,641,336.98/19,296.96
  6. Step 6: Final answer
    x = 13,144.11

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1.5x scale

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.