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Finding the Fourth Proportional to 12,671.76, 18,997.44 and 8,710.95

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Solution

The fourth proportional to 12,671.76, 18,997.44 and 8,710.95 is: 13,059.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,671.76 : 18,997.44 = 8,710.95 : x
  2. Step 2: Convert to fraction form
    12,671.76/18,997.44 = 8,710.95/x
  3. Step 3: Cross multiply
    12,671.76x = 18,997.44 × 8,710.95
  4. Step 4: Simplify right side
    12,671.76x = 165,485,749.97
  5. Step 5: Solve for x
    x = 165,485,749.97/12,671.76
  6. Step 6: Final answer
    x = 13,059.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.