Home / 20,610.82-30,915.78-5,028.40

Finding the Fourth Proportional to 20,610.82, 30,915.78 and 5,028.40

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Solution

The fourth proportional to 20,610.82, 30,915.78 and 5,028.40 is: 7,542.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.82 : 30,915.78 = 5,028.40 : x
  2. Step 2: Convert to fraction form
    20,610.82/30,915.78 = 5,028.40/x
  3. Step 3: Cross multiply
    20,610.82x = 30,915.78 × 5,028.40
  4. Step 4: Simplify right side
    20,610.82x = 155,456,908.15
  5. Step 5: Solve for x
    x = 155,456,908.15/20,610.82
  6. Step 6: Final answer
    x = 7,542.49

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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.