Home / 21,193.11-29,252.21-13,230.54

Finding the Fourth Proportional to 21,193.11, 29,252.21 and 13,230.54

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Solution

The fourth proportional to 21,193.11, 29,252.21 and 13,230.54 is: 18,261.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.11 : 29,252.21 = 13,230.54 : x
  2. Step 2: Convert to fraction form
    21,193.11/29,252.21 = 13,230.54/x
  3. Step 3: Cross multiply
    21,193.11x = 29,252.21 × 13,230.54
  4. Step 4: Simplify right side
    21,193.11x = 387,022,468.34
  5. Step 5: Solve for x
    x = 387,022,468.34/21,193.11
  6. Step 6: Final answer
    x = 18,261.71

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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.