Home / 21,193.86-29,253.24-13,231.29

Finding the Fourth Proportional to 21,193.86, 29,253.24 and 13,231.29

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Solution

The fourth proportional to 21,193.86, 29,253.24 and 13,231.29 is: 18,262.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193.86 : 29,253.24 = 13,231.29 : x
  2. Step 2: Convert to fraction form
    21,193.86/29,253.24 = 13,231.29/x
  3. Step 3: Cross multiply
    21,193.86x = 29,253.24 × 13,231.29
  4. Step 4: Simplify right side
    21,193.86x = 387,058,101.88
  5. Step 5: Solve for x
    x = 387,058,101.88/21,193.86
  6. Step 6: Final answer
    x = 18,262.75

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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.