Home / 20,318.68-30,448.20-11,451.27

Finding the Fourth Proportional to 20,318.68, 30,448.20 and 11,451.27

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Solution

The fourth proportional to 20,318.68, 30,448.20 and 11,451.27 is: 17,160.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,318.68 : 30,448.20 = 11,451.27 : x
  2. Step 2: Convert to fraction form
    20,318.68/30,448.20 = 11,451.27/x
  3. Step 3: Cross multiply
    20,318.68x = 30,448.20 × 11,451.27
  4. Step 4: Simplify right side
    20,318.68x = 348,670,716.34
  5. Step 5: Solve for x
    x = 348,670,716.34/20,318.68
  6. Step 6: Final answer
    x = 17,160.11

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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.