Home / 13,820.60-20,733.60-5,499.20

Finding the Fourth Proportional to 13,820.60, 20,733.60 and 5,499.20

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Solution

The fourth proportional to 13,820.60, 20,733.60 and 5,499.20 is: 8,249.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.60 : 20,733.60 = 5,499.20 : x
  2. Step 2: Convert to fraction form
    13,820.60/20,733.60 = 5,499.20/x
  3. Step 3: Cross multiply
    13,820.60x = 20,733.60 × 5,499.20
  4. Step 4: Simplify right side
    13,820.60x = 114,018,213.12
  5. Step 5: Solve for x
    x = 114,018,213.12/13,820.60
  6. Step 6: Final answer
    x = 8,249.87

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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.