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Finding the Fourth Proportional to 11,553.66, 15,942.94 and 7,018.82

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Solution

The fourth proportional to 11,553.66, 15,942.94 and 7,018.82 is: 9,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,553.66 : 15,942.94 = 7,018.82 : x
  2. Step 2: Convert to fraction form
    11,553.66/15,942.94 = 7,018.82/x
  3. Step 3: Cross multiply
    11,553.66x = 15,942.94 × 7,018.82
  4. Step 4: Simplify right side
    11,553.66x = 111,900,626.13
  5. Step 5: Solve for x
    x = 111,900,626.13/11,553.66
  6. Step 6: Final answer
    x = 9,685.30

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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.