Home / 20,245.42-30,368.13-10,872.54

Finding the Fourth Proportional to 20,245.42, 30,368.13 and 10,872.54

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Solution

The fourth proportional to 20,245.42, 30,368.13 and 10,872.54 is: 16,308.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.42 : 30,368.13 = 10,872.54 : x
  2. Step 2: Convert to fraction form
    20,245.42/30,368.13 = 10,872.54/x
  3. Step 3: Cross multiply
    20,245.42x = 30,368.13 × 10,872.54
  4. Step 4: Simplify right side
    20,245.42x = 330,178,667.38
  5. Step 5: Solve for x
    x = 330,178,667.38/20,245.42
  6. Step 6: Final answer
    x = 16,308.81

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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.