Home / 20,429.09-30,635.73-7,947.41

Finding the Fourth Proportional to 20,429.09, 30,635.73 and 7,947.41

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Solution

The fourth proportional to 20,429.09, 30,635.73 and 7,947.41 is: 11,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,429.09 : 30,635.73 = 7,947.41 : x
  2. Step 2: Convert to fraction form
    20,429.09/30,635.73 = 7,947.41/x
  3. Step 3: Cross multiply
    20,429.09x = 30,635.73 × 7,947.41
  4. Step 4: Simplify right side
    20,429.09x = 243,474,706.96
  5. Step 5: Solve for x
    x = 243,474,706.96/20,429.09
  6. Step 6: Final answer
    x = 11,918.04

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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.