Home / 21,146.14-29,183.45-11,715.58

Finding the Fourth Proportional to 21,146.14, 29,183.45 and 11,715.58

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Solution

The fourth proportional to 21,146.14, 29,183.45 and 11,715.58 is: 16,168.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.14 : 29,183.45 = 11,715.58 : x
  2. Step 2: Convert to fraction form
    21,146.14/29,183.45 = 11,715.58/x
  3. Step 3: Cross multiply
    21,146.14x = 29,183.45 × 11,715.58
  4. Step 4: Simplify right side
    21,146.14x = 341,901,043.15
  5. Step 5: Solve for x
    x = 341,901,043.15/21,146.14
  6. Step 6: Final answer
    x = 16,168.48

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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.