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Finding the Fourth Proportional to 21,676.01, 29,911.48 and 12,242.75

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Solution

The fourth proportional to 21,676.01, 29,911.48 and 12,242.75 is: 16,894.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.01 : 29,911.48 = 12,242.75 : x
  2. Step 2: Convert to fraction form
    21,676.01/29,911.48 = 12,242.75/x
  3. Step 3: Cross multiply
    21,676.01x = 29,911.48 × 12,242.75
  4. Step 4: Simplify right side
    21,676.01x = 366,198,591.61
  5. Step 5: Solve for x
    x = 366,198,591.61/21,676.01
  6. Step 6: Final answer
    x = 16,894.19

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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.