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Finding the Fourth Proportional to 13,481.17, 18,601.99 and 7,737.80

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Solution

The fourth proportional to 13,481.17, 18,601.99 and 7,737.80 is: 10,677.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.17 : 18,601.99 = 7,737.80 : x
  2. Step 2: Convert to fraction form
    13,481.17/18,601.99 = 7,737.80/x
  3. Step 3: Cross multiply
    13,481.17x = 18,601.99 × 7,737.80
  4. Step 4: Simplify right side
    13,481.17x = 143,938,365.87
  5. Step 5: Solve for x
    x = 143,938,365.87/13,481.17
  6. Step 6: Final answer
    x = 10,677.00

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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.