Home / 21,146.68-29,183.46-11,715.28

Finding the Fourth Proportional to 21,146.68, 29,183.46 and 11,715.28

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Solution

The fourth proportional to 21,146.68, 29,183.46 and 11,715.28 is: 16,167.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.68 : 29,183.46 = 11,715.28 : x
  2. Step 2: Convert to fraction form
    21,146.68/29,183.46 = 11,715.28/x
  3. Step 3: Cross multiply
    21,146.68x = 29,183.46 × 11,715.28
  4. Step 4: Simplify right side
    21,146.68x = 341,892,405.27
  5. Step 5: Solve for x
    x = 341,892,405.27/21,146.68
  6. Step 6: Final answer
    x = 16,167.66

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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.