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Finding the Fourth Proportional to 12,616.56, 17,410.95 and 8,148.60

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Solution

The fourth proportional to 12,616.56, 17,410.95 and 8,148.60 is: 11,245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.56 : 17,410.95 = 8,148.60 : x
  2. Step 2: Convert to fraction form
    12,616.56/17,410.95 = 8,148.60/x
  3. Step 3: Cross multiply
    12,616.56x = 17,410.95 × 8,148.60
  4. Step 4: Simplify right side
    12,616.56x = 141,874,867.17
  5. Step 5: Solve for x
    x = 141,874,867.17/12,616.56
  6. Step 6: Final answer
    x = 11,245.13

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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.