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Finding the Fourth Proportional to 8,976.56, 13,443.94 and 8,665.16

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Solution

The fourth proportional to 8,976.56, 13,443.94 and 8,665.16 is: 12,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.56 : 13,443.94 = 8,665.16 : x
  2. Step 2: Convert to fraction form
    8,976.56/13,443.94 = 8,665.16/x
  3. Step 3: Cross multiply
    8,976.56x = 13,443.94 × 8,665.16
  4. Step 4: Simplify right side
    8,976.56x = 116,493,891.13
  5. Step 5: Solve for x
    x = 116,493,891.13/8,976.56
  6. Step 6: Final answer
    x = 12,977.57

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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.