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Finding the Fourth Proportional to 11,321.66, 16,982.47 and 9,640.15

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Solution

The fourth proportional to 11,321.66, 16,982.47 and 9,640.15 is: 14,460.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.66 : 16,982.47 = 9,640.15 : x
  2. Step 2: Convert to fraction form
    11,321.66/16,982.47 = 9,640.15/x
  3. Step 3: Cross multiply
    11,321.66x = 16,982.47 × 9,640.15
  4. Step 4: Simplify right side
    11,321.66x = 163,713,558.17
  5. Step 5: Solve for x
    x = 163,713,558.17/11,321.66
  6. Step 6: Final answer
    x = 14,460.21

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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.