Home / 21,201.26-29,257.83-13,248.09

Finding the Fourth Proportional to 21,201.26, 29,257.83 and 13,248.09

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Solution

The fourth proportional to 21,201.26, 29,257.83 and 13,248.09 is: 18,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.26 : 29,257.83 = 13,248.09 : x
  2. Step 2: Convert to fraction form
    21,201.26/29,257.83 = 13,248.09/x
  3. Step 3: Cross multiply
    21,201.26x = 29,257.83 × 13,248.09
  4. Step 4: Simplify right side
    21,201.26x = 387,610,365.04
  5. Step 5: Solve for x
    x = 387,610,365.04/21,201.26
  6. Step 6: Final answer
    x = 18,282.43

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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.