Home / 21,676.32-29,911.68-12,245.76

Finding the Fourth Proportional to 21,676.32, 29,911.68 and 12,245.76

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Solution

The fourth proportional to 21,676.32, 29,911.68 and 12,245.76 is: 16,898.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.32 : 29,911.68 = 12,245.76 : x
  2. Step 2: Convert to fraction form
    21,676.32/29,911.68 = 12,245.76/x
  3. Step 3: Cross multiply
    21,676.32x = 29,911.68 × 12,245.76
  4. Step 4: Simplify right side
    21,676.32x = 366,291,254.48
  5. Step 5: Solve for x
    x = 366,291,254.48/21,676.32
  6. Step 6: Final answer
    x = 16,898.22

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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.