Home / 13,742.34-20,611.19-3,879.89

Finding the Fourth Proportional to 13,742.34, 20,611.19 and 3,879.89

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Solution

The fourth proportional to 13,742.34, 20,611.19 and 3,879.89 is: 5,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.34 : 20,611.19 = 3,879.89 : x
  2. Step 2: Convert to fraction form
    13,742.34/20,611.19 = 3,879.89/x
  3. Step 3: Cross multiply
    13,742.34x = 20,611.19 × 3,879.89
  4. Step 4: Simplify right side
    13,742.34x = 79,969,027.51
  5. Step 5: Solve for x
    x = 79,969,027.51/13,742.34
  6. Step 6: Final answer
    x = 5,819.17

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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.