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Finding the Fourth Proportional to 8,976.66, 13,444.11 and 8,665.20

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Solution

The fourth proportional to 8,976.66, 13,444.11 and 8,665.20 is: 12,977.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.66 : 13,444.11 = 8,665.20 : x
  2. Step 2: Convert to fraction form
    8,976.66/13,444.11 = 8,665.20/x
  3. Step 3: Cross multiply
    8,976.66x = 13,444.11 × 8,665.20
  4. Step 4: Simplify right side
    8,976.66x = 116,495,901.97
  5. Step 5: Solve for x
    x = 116,495,901.97/8,976.66
  6. Step 6: Final answer
    x = 12,977.64

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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.