Home / 21,308.13-29,405.42-11,748.36

Finding the Fourth Proportional to 21,308.13, 29,405.42 and 11,748.36

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Solution

The fourth proportional to 21,308.13, 29,405.42 and 11,748.36 is: 16,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.13 : 29,405.42 = 11,748.36 : x
  2. Step 2: Convert to fraction form
    21,308.13/29,405.42 = 11,748.36/x
  3. Step 3: Cross multiply
    21,308.13x = 29,405.42 × 11,748.36
  4. Step 4: Simplify right side
    21,308.13x = 345,465,489.48
  5. Step 5: Solve for x
    x = 345,465,489.48/21,308.13
  6. Step 6: Final answer
    x = 16,212.85

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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.