Home / 21,442.11-29,604.57-13,388.04

Finding the Fourth Proportional to 21,442.11, 29,604.57 and 13,388.04

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Solution

The fourth proportional to 21,442.11, 29,604.57 and 13,388.04 is: 18,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.11 : 29,604.57 = 13,388.04 : x
  2. Step 2: Convert to fraction form
    21,442.11/29,604.57 = 13,388.04/x
  3. Step 3: Cross multiply
    21,442.11x = 29,604.57 × 13,388.04
  4. Step 4: Simplify right side
    21,442.11x = 396,347,167.34
  5. Step 5: Solve for x
    x = 396,347,167.34/21,442.11
  6. Step 6: Final answer
    x = 18,484.52

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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.