Home / 13,676.48-18,859.20-8,086.40

Finding the Fourth Proportional to 13,676.48, 18,859.20 and 8,086.40

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Solution

The fourth proportional to 13,676.48, 18,859.20 and 8,086.40 is: 11,150.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.48 : 18,859.20 = 8,086.40 : x
  2. Step 2: Convert to fraction form
    13,676.48/18,859.20 = 8,086.40/x
  3. Step 3: Cross multiply
    13,676.48x = 18,859.20 × 8,086.40
  4. Step 4: Simplify right side
    13,676.48x = 152,503,034.88
  5. Step 5: Solve for x
    x = 152,503,034.88/13,676.48
  6. Step 6: Final answer
    x = 11,150.75

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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.