Home / 21,525.21-29,704.21-11,964.86

Finding the Fourth Proportional to 21,525.21, 29,704.21 and 11,964.86

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Solution

The fourth proportional to 21,525.21, 29,704.21 and 11,964.86 is: 16,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,525.21 : 29,704.21 = 11,964.86 : x
  2. Step 2: Convert to fraction form
    21,525.21/29,704.21 = 11,964.86/x
  3. Step 3: Cross multiply
    21,525.21x = 29,704.21 × 11,964.86
  4. Step 4: Simplify right side
    21,525.21x = 355,406,691.89
  5. Step 5: Solve for x
    x = 355,406,691.89/21,525.21
  6. Step 6: Final answer
    x = 16,511.18

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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.