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Finding the Fourth Proportional to 8,960.95, 13,439.63 and 8,516.38

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Solution

The fourth proportional to 8,960.95, 13,439.63 and 8,516.38 is: 12,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,960.95 : 13,439.63 = 8,516.38 : x
  2. Step 2: Convert to fraction form
    8,960.95/13,439.63 = 8,516.38/x
  3. Step 3: Cross multiply
    8,960.95x = 13,439.63 × 8,516.38
  4. Step 4: Simplify right side
    8,960.95x = 114,456,996.14
  5. Step 5: Solve for x
    x = 114,456,996.14/8,960.95
  6. Step 6: Final answer
    x = 12,772.86

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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.