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Finding the Fourth Proportional to 11,333.42, 15,640.13 and 6,616.79

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Solution

The fourth proportional to 11,333.42, 15,640.13 and 6,616.79 is: 9,131.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,333.42 : 15,640.13 = 6,616.79 : x
  2. Step 2: Convert to fraction form
    11,333.42/15,640.13 = 6,616.79/x
  3. Step 3: Cross multiply
    11,333.42x = 15,640.13 × 6,616.79
  4. Step 4: Simplify right side
    11,333.42x = 103,487,422.70
  5. Step 5: Solve for x
    x = 103,487,422.70/11,333.42
  6. Step 6: Final answer
    x = 9,131.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.