Home / 21,311.24-29,410.20-11,751.53

Finding the Fourth Proportional to 21,311.24, 29,410.20 and 11,751.53

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Solution

The fourth proportional to 21,311.24, 29,410.20 and 11,751.53 is: 16,217.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.24 : 29,410.20 = 11,751.53 : x
  2. Step 2: Convert to fraction form
    21,311.24/29,410.20 = 11,751.53/x
  3. Step 3: Cross multiply
    21,311.24x = 29,410.20 × 11,751.53
  4. Step 4: Simplify right side
    21,311.24x = 345,614,700.56
  5. Step 5: Solve for x
    x = 345,614,700.56/21,311.24
  6. Step 6: Final answer
    x = 16,217.49

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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.