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Finding the Fourth Proportional to 21,082.92, 29,094.42 and 11,651.40

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Solution

The fourth proportional to 21,082.92, 29,094.42 and 11,651.40 is: 16,078.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.92 : 29,094.42 = 11,651.40 : x
  2. Step 2: Convert to fraction form
    21,082.92/29,094.42 = 11,651.40/x
  3. Step 3: Cross multiply
    21,082.92x = 29,094.42 × 11,651.40
  4. Step 4: Simplify right side
    21,082.92x = 338,990,725.19
  5. Step 5: Solve for x
    x = 338,990,725.19/21,082.92
  6. Step 6: Final answer
    x = 16,078.93

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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.