Home / 21,173.42-29,217.72-11,611.77

Finding the Fourth Proportional to 21,173.42, 29,217.72 and 11,611.77

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Solution

The fourth proportional to 21,173.42, 29,217.72 and 11,611.77 is: 16,023.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.42 : 29,217.72 = 11,611.77 : x
  2. Step 2: Convert to fraction form
    21,173.42/29,217.72 = 11,611.77/x
  3. Step 3: Cross multiply
    21,173.42x = 29,217.72 × 11,611.77
  4. Step 4: Simplify right side
    21,173.42x = 339,269,444.56
  5. Step 5: Solve for x
    x = 339,269,444.56/21,173.42
  6. Step 6: Final answer
    x = 16,023.37

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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.