Home / 20,318.84-30,468.68-13,191.54

Finding the Fourth Proportional to 20,318.84, 30,468.68 and 13,191.54

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Solution

The fourth proportional to 20,318.84, 30,468.68 and 13,191.54 is: 19,781.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.84 : 30,468.68 = 13,191.54 : x
  2. Step 2: Convert to fraction form
    20,318.84/30,468.68 = 13,191.54/x
  3. Step 3: Cross multiply
    20,318.84x = 30,468.68 × 13,191.54
  4. Step 4: Simplify right side
    20,318.84x = 401,928,745.01
  5. Step 5: Solve for x
    x = 401,928,745.01/20,318.84
  6. Step 6: Final answer
    x = 19,781.09

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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.