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Finding the Fourth Proportional to 13,571, 18,726.44 and 7,906.94

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Solution

The fourth proportional to 13,571, 18,726.44 and 7,906.94 is: 10,910.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,571 : 18,726.44 = 7,906.94 : x
  2. Step 2: Convert to fraction form
    13,571/18,726.44 = 7,906.94/x
  3. Step 3: Cross multiply
    13,571x = 18,726.44 × 7,906.94
  4. Step 4: Simplify right side
    13,571x = 148,068,837.49
  5. Step 5: Solve for x
    x = 148,068,837.49/13,571
  6. Step 6: Final answer
    x = 10,910.68

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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.