Home / 20,286.07-30,426.02-7,135.37

Finding the Fourth Proportional to 20,286.07, 30,426.02 and 7,135.37

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Solution

The fourth proportional to 20,286.07, 30,426.02 and 7,135.37 is: 10,701.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.07 : 30,426.02 = 7,135.37 : x
  2. Step 2: Convert to fraction form
    20,286.07/30,426.02 = 7,135.37/x
  3. Step 3: Cross multiply
    20,286.07x = 30,426.02 × 7,135.37
  4. Step 4: Simplify right side
    20,286.07x = 217,100,758.20
  5. Step 5: Solve for x
    x = 217,100,758.20/20,286.07
  6. Step 6: Final answer
    x = 10,701.97

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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.