Home / 20,427.46-30,633.29-7,945.80

Finding the Fourth Proportional to 20,427.46, 30,633.29 and 7,945.80

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Solution

The fourth proportional to 20,427.46, 30,633.29 and 7,945.80 is: 11,915.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,427.46 : 30,633.29 = 7,945.80 : x
  2. Step 2: Convert to fraction form
    20,427.46/30,633.29 = 7,945.80/x
  3. Step 3: Cross multiply
    20,427.46x = 30,633.29 × 7,945.80
  4. Step 4: Simplify right side
    20,427.46x = 243,405,870.87
  5. Step 5: Solve for x
    x = 243,405,870.87/20,427.46
  6. Step 6: Final answer
    x = 11,915.62

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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.