Home / 20,071.42-30,107.13-8,378.26

Finding the Fourth Proportional to 20,071.42, 30,107.13 and 8,378.26

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Solution

The fourth proportional to 20,071.42, 30,107.13 and 8,378.26 is: 12,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.42 : 30,107.13 = 8,378.26 : x
  2. Step 2: Convert to fraction form
    20,071.42/30,107.13 = 8,378.26/x
  3. Step 3: Cross multiply
    20,071.42x = 30,107.13 × 8,378.26
  4. Step 4: Simplify right side
    20,071.42x = 252,245,362.99
  5. Step 5: Solve for x
    x = 252,245,362.99/20,071.42
  6. Step 6: Final answer
    x = 12,567.39

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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.