Home / 13,676.38-18,877.89-8,299.06

Finding the Fourth Proportional to 13,676.38, 18,877.89 and 8,299.06

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Solution

The fourth proportional to 13,676.38, 18,877.89 and 8,299.06 is: 11,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.38 : 18,877.89 = 8,299.06 : x
  2. Step 2: Convert to fraction form
    13,676.38/18,877.89 = 8,299.06/x
  3. Step 3: Cross multiply
    13,676.38x = 18,877.89 × 8,299.06
  4. Step 4: Simplify right side
    13,676.38x = 156,668,741.78
  5. Step 5: Solve for x
    x = 156,668,741.78/13,676.38
  6. Step 6: Final answer
    x = 11,455.42

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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.