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Finding the Fourth Proportional to 11,121, 15,344.52 and 6,644.06

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Solution

The fourth proportional to 11,121, 15,344.52 and 6,644.06 is: 9,167.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121 : 15,344.52 = 6,644.06 : x
  2. Step 2: Convert to fraction form
    11,121/15,344.52 = 6,644.06/x
  3. Step 3: Cross multiply
    11,121x = 15,344.52 × 6,644.06
  4. Step 4: Simplify right side
    11,121x = 101,949,911.55
  5. Step 5: Solve for x
    x = 101,949,911.55/11,121
  6. Step 6: Final answer
    x = 9,167.33

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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.