Home / 20,453.29-30,672.33-7,122.86

Finding the Fourth Proportional to 20,453.29, 30,672.33 and 7,122.86

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Solution

The fourth proportional to 20,453.29, 30,672.33 and 7,122.86 is: 10,681.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.29 : 30,672.33 = 7,122.86 : x
  2. Step 2: Convert to fraction form
    20,453.29/30,672.33 = 7,122.86/x
  3. Step 3: Cross multiply
    20,453.29x = 30,672.33 × 7,122.86
  4. Step 4: Simplify right side
    20,453.29x = 218,474,687.48
  5. Step 5: Solve for x
    x = 218,474,687.48/20,453.29
  6. Step 6: Final answer
    x = 10,681.64

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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.