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Finding the Fourth Proportional to 14,840.92, 20,481 and 8,126.61

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Solution

The fourth proportional to 14,840.92, 20,481 and 8,126.61 is: 11,215.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,840.92 : 20,481 = 8,126.61 : x
  2. Step 2: Convert to fraction form
    14,840.92/20,481 = 8,126.61/x
  3. Step 3: Cross multiply
    14,840.92x = 20,481 × 8,126.61
  4. Step 4: Simplify right side
    14,840.92x = 166,441,099.41
  5. Step 5: Solve for x
    x = 166,441,099.41/14,840.92
  6. Step 6: Final answer
    x = 11,215.01

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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.