Home / 21,193.88-29,247.68-13,240.73

Finding the Fourth Proportional to 21,193.88, 29,247.68 and 13,240.73

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Solution

The fourth proportional to 21,193.88, 29,247.68 and 13,240.73 is: 18,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.88 : 29,247.68 = 13,240.73 : x
  2. Step 2: Convert to fraction form
    21,193.88/29,247.68 = 13,240.73/x
  3. Step 3: Cross multiply
    21,193.88x = 29,247.68 × 13,240.73
  4. Step 4: Simplify right side
    21,193.88x = 387,260,421.56
  5. Step 5: Solve for x
    x = 387,260,421.56/21,193.88
  6. Step 6: Final answer
    x = 18,272.28

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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.