Home / 21,242.11-29,314.45-11,682.41

Finding the Fourth Proportional to 21,242.11, 29,314.45 and 11,682.41

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Solution

The fourth proportional to 21,242.11, 29,314.45 and 11,682.41 is: 16,121.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.11 : 29,314.45 = 11,682.41 : x
  2. Step 2: Convert to fraction form
    21,242.11/29,314.45 = 11,682.41/x
  3. Step 3: Cross multiply
    21,242.11x = 29,314.45 × 11,682.41
  4. Step 4: Simplify right side
    21,242.11x = 342,463,391.04
  5. Step 5: Solve for x
    x = 342,463,391.04/21,242.11
  6. Step 6: Final answer
    x = 16,121.91

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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.