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Finding the Fourth Proportional to 21,447.93, 29,599.79 and 13,496.97

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Solution

The fourth proportional to 21,447.93, 29,599.79 and 13,496.97 is: 18,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,447.93 : 29,599.79 = 13,496.97 : x
  2. Step 2: Convert to fraction form
    21,447.93/29,599.79 = 13,496.97/x
  3. Step 3: Cross multiply
    21,447.93x = 29,599.79 × 13,496.97
  4. Step 4: Simplify right side
    21,447.93x = 399,507,410.15
  5. Step 5: Solve for x
    x = 399,507,410.15/21,447.93
  6. Step 6: Final answer
    x = 18,626.85

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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.