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Finding the Fourth Proportional to 11,370.88, 15,696.08 and 8,410.56

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Solution

The fourth proportional to 11,370.88, 15,696.08 and 8,410.56 is: 11,609.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,370.88 : 15,696.08 = 8,410.56 : x
  2. Step 2: Convert to fraction form
    11,370.88/15,696.08 = 8,410.56/x
  3. Step 3: Cross multiply
    11,370.88x = 15,696.08 × 8,410.56
  4. Step 4: Simplify right side
    11,370.88x = 132,012,822.60
  5. Step 5: Solve for x
    x = 132,012,822.60/11,370.88
  6. Step 6: Final answer
    x = 11,609.73

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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.