Home / 20,435.97-30,665.60-7,954.38

Finding the Fourth Proportional to 20,435.97, 30,665.60 and 7,954.38

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Solution

The fourth proportional to 20,435.97, 30,665.60 and 7,954.38 is: 11,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.97 : 30,665.60 = 7,954.38 : x
  2. Step 2: Convert to fraction form
    20,435.97/30,665.60 = 7,954.38/x
  3. Step 3: Cross multiply
    20,435.97x = 30,665.60 × 7,954.38
  4. Step 4: Simplify right side
    20,435.97x = 243,925,795.56
  5. Step 5: Solve for x
    x = 243,925,795.56/20,435.97
  6. Step 6: Final answer
    x = 11,936.10

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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.