Home / 20,480.07-30,727.50-7,155.03

Finding the Fourth Proportional to 20,480.07, 30,727.50 and 7,155.03

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Solution

The fourth proportional to 20,480.07, 30,727.50 and 7,155.03 is: 10,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,480.07 : 30,727.50 = 7,155.03 : x
  2. Step 2: Convert to fraction form
    20,480.07/30,727.50 = 7,155.03/x
  3. Step 3: Cross multiply
    20,480.07x = 30,727.50 × 7,155.03
  4. Step 4: Simplify right side
    20,480.07x = 219,856,184.33
  5. Step 5: Solve for x
    x = 219,856,184.33/20,480.07
  6. Step 6: Final answer
    x = 10,735.13

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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.