Home / 21,626.68-29,845.20-12,676.72

Finding the Fourth Proportional to 21,626.68, 29,845.20 and 12,676.72

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Solution

The fourth proportional to 21,626.68, 29,845.20 and 12,676.72 is: 17,494.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.68 : 29,845.20 = 12,676.72 : x
  2. Step 2: Convert to fraction form
    21,626.68/29,845.20 = 12,676.72/x
  3. Step 3: Cross multiply
    21,626.68x = 29,845.20 × 12,676.72
  4. Step 4: Simplify right side
    21,626.68x = 378,339,216.67
  5. Step 5: Solve for x
    x = 378,339,216.67/21,626.68
  6. Step 6: Final answer
    x = 17,494.10

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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.