Home / 20,225.39-30,338.05-9,405.05

Finding the Fourth Proportional to 20,225.39, 30,338.05 and 9,405.05

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Solution

The fourth proportional to 20,225.39, 30,338.05 and 9,405.05 is: 14,107.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.39 : 30,338.05 = 9,405.05 : x
  2. Step 2: Convert to fraction form
    20,225.39/30,338.05 = 9,405.05/x
  3. Step 3: Cross multiply
    20,225.39x = 30,338.05 × 9,405.05
  4. Step 4: Simplify right side
    20,225.39x = 285,330,877.15
  5. Step 5: Solve for x
    x = 285,330,877.15/20,225.39
  6. Step 6: Final answer
    x = 14,107.56

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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.