Home / 21,314.17-31,990.97-10,791.58

Finding the Fourth Proportional to 21,314.17, 31,990.97 and 10,791.58

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Solution

The fourth proportional to 21,314.17, 31,990.97 and 10,791.58 is: 16,197.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.17 : 31,990.97 = 10,791.58 : x
  2. Step 2: Convert to fraction form
    21,314.17/31,990.97 = 10,791.58/x
  3. Step 3: Cross multiply
    21,314.17x = 31,990.97 × 10,791.58
  4. Step 4: Simplify right side
    21,314.17x = 345,233,112.03
  5. Step 5: Solve for x
    x = 345,233,112.03/21,314.17
  6. Step 6: Final answer
    x = 16,197.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.