Home / 21,238.42-29,305.57-11,806.74

Finding the Fourth Proportional to 21,238.42, 29,305.57 and 11,806.74

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Solution

The fourth proportional to 21,238.42, 29,305.57 and 11,806.74 is: 16,291.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238.42 : 29,305.57 = 11,806.74 : x
  2. Step 2: Convert to fraction form
    21,238.42/29,305.57 = 11,806.74/x
  3. Step 3: Cross multiply
    21,238.42x = 29,305.57 × 11,806.74
  4. Step 4: Simplify right side
    21,238.42x = 346,003,245.54
  5. Step 5: Solve for x
    x = 346,003,245.54/21,238.42
  6. Step 6: Final answer
    x = 16,291.38

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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.