Home / 20,190.62-30,287.05-7,711.67

Finding the Fourth Proportional to 20,190.62, 30,287.05 and 7,711.67

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Solution

The fourth proportional to 20,190.62, 30,287.05 and 7,711.67 is: 11,567.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.62 : 30,287.05 = 7,711.67 : x
  2. Step 2: Convert to fraction form
    20,190.62/30,287.05 = 7,711.67/x
  3. Step 3: Cross multiply
    20,190.62x = 30,287.05 × 7,711.67
  4. Step 4: Simplify right side
    20,190.62x = 233,563,791.31
  5. Step 5: Solve for x
    x = 233,563,791.31/20,190.62
  6. Step 6: Final answer
    x = 11,567.93

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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.