Home / 13,590.18-18,755.45-8,213.96

Finding the Fourth Proportional to 13,590.18, 18,755.45 and 8,213.96

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Solution

The fourth proportional to 13,590.18, 18,755.45 and 8,213.96 is: 11,335.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,590.18 : 18,755.45 = 8,213.96 : x
  2. Step 2: Convert to fraction form
    13,590.18/18,755.45 = 8,213.96/x
  3. Step 3: Cross multiply
    13,590.18x = 18,755.45 × 8,213.96
  4. Step 4: Simplify right side
    13,590.18x = 154,056,447.20
  5. Step 5: Solve for x
    x = 154,056,447.20/13,590.18
  6. Step 6: Final answer
    x = 11,335.87

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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.