Home / 21,201.21-29,238.57-13,244.22

Finding the Fourth Proportional to 21,201.21, 29,238.57 and 13,244.22

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Solution

The fourth proportional to 21,201.21, 29,238.57 and 13,244.22 is: 18,265.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.21 : 29,238.57 = 13,244.22 : x
  2. Step 2: Convert to fraction form
    21,201.21/29,238.57 = 13,244.22/x
  3. Step 3: Cross multiply
    21,201.21x = 29,238.57 × 13,244.22
  4. Step 4: Simplify right side
    21,201.21x = 387,242,053.57
  5. Step 5: Solve for x
    x = 387,242,053.57/21,201.21
  6. Step 6: Final answer
    x = 18,265.09

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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.