Home / 21,241.56-29,314.10-11,682.18

Finding the Fourth Proportional to 21,241.56, 29,314.10 and 11,682.18

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Solution

The fourth proportional to 21,241.56, 29,314.10 and 11,682.18 is: 16,121.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.56 : 29,314.10 = 11,682.18 : x
  2. Step 2: Convert to fraction form
    21,241.56/29,314.10 = 11,682.18/x
  3. Step 3: Cross multiply
    21,241.56x = 29,314.10 × 11,682.18
  4. Step 4: Simplify right side
    21,241.56x = 342,452,592.74
  5. Step 5: Solve for x
    x = 342,452,592.74/21,241.56
  6. Step 6: Final answer
    x = 16,121.82

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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.