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Finding the Fourth Proportional to 11,334, 15,641.10 and 6,621.60

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Solution

The fourth proportional to 11,334, 15,641.10 and 6,621.60 is: 9,137.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,334 : 15,641.10 = 6,621.60 : x
  2. Step 2: Convert to fraction form
    11,334/15,641.10 = 6,621.60/x
  3. Step 3: Cross multiply
    11,334x = 15,641.10 × 6,621.60
  4. Step 4: Simplify right side
    11,334x = 103,569,107.76
  5. Step 5: Solve for x
    x = 103,569,107.76/11,334
  6. Step 6: Final answer
    x = 9,137.91

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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.