Home / 10,863.20-16,291.56-8,676.20

Finding the Fourth Proportional to 10,863.20, 16,291.56 and 8,676.20

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Solution

The fourth proportional to 10,863.20, 16,291.56 and 8,676.20 is: 13,011.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,863.20 : 16,291.56 = 8,676.20 : x
  2. Step 2: Convert to fraction form
    10,863.20/16,291.56 = 8,676.20/x
  3. Step 3: Cross multiply
    10,863.20x = 16,291.56 × 8,676.20
  4. Step 4: Simplify right side
    10,863.20x = 141,348,832.87
  5. Step 5: Solve for x
    x = 141,348,832.87/10,863.20
  6. Step 6: Final answer
    x = 13,011.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.