Home / 13,634.79-20,458.14-6,620.19

Finding the Fourth Proportional to 13,634.79, 20,458.14 and 6,620.19

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Solution

The fourth proportional to 13,634.79, 20,458.14 and 6,620.19 is: 9,933.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.79 : 20,458.14 = 6,620.19 : x
  2. Step 2: Convert to fraction form
    13,634.79/20,458.14 = 6,620.19/x
  3. Step 3: Cross multiply
    13,634.79x = 20,458.14 × 6,620.19
  4. Step 4: Simplify right side
    13,634.79x = 135,436,773.85
  5. Step 5: Solve for x
    x = 135,436,773.85/13,634.79
  6. Step 6: Final answer
    x = 9,933.18

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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.