Home / 20,195.33-30,288.78-7,712.55

Finding the Fourth Proportional to 20,195.33, 30,288.78 and 7,712.55

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Solution

The fourth proportional to 20,195.33, 30,288.78 and 7,712.55 is: 11,567.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.33 : 30,288.78 = 7,712.55 : x
  2. Step 2: Convert to fraction form
    20,195.33/30,288.78 = 7,712.55/x
  3. Step 3: Cross multiply
    20,195.33x = 30,288.78 × 7,712.55
  4. Step 4: Simplify right side
    20,195.33x = 233,603,730.19
  5. Step 5: Solve for x
    x = 233,603,730.19/20,195.33
  6. Step 6: Final answer
    x = 11,567.22

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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.