Home / 21,132.14-29,163.27-11,700.70

Finding the Fourth Proportional to 21,132.14, 29,163.27 and 11,700.70

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Solution

The fourth proportional to 21,132.14, 29,163.27 and 11,700.70 is: 16,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,132.14 : 29,163.27 = 11,700.70 : x
  2. Step 2: Convert to fraction form
    21,132.14/29,163.27 = 11,700.70/x
  3. Step 3: Cross multiply
    21,132.14x = 29,163.27 × 11,700.70
  4. Step 4: Simplify right side
    21,132.14x = 341,230,808.30
  5. Step 5: Solve for x
    x = 341,230,808.30/21,132.14
  6. Step 6: Final answer
    x = 16,147.48

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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.