Home / 20,351.20-30,469.20-18,277.60

Finding the Fourth Proportional to 20,351.20, 30,469.20 and 18,277.60

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Solution

The fourth proportional to 20,351.20, 30,469.20 and 18,277.60 is: 27,364.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.20 : 30,469.20 = 18,277.60 : x
  2. Step 2: Convert to fraction form
    20,351.20/30,469.20 = 18,277.60/x
  3. Step 3: Cross multiply
    20,351.20x = 30,469.20 × 18,277.60
  4. Step 4: Simplify right side
    20,351.20x = 556,903,849.92
  5. Step 5: Solve for x
    x = 556,903,849.92/20,351.20
  6. Step 6: Final answer
    x = 27,364.67

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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.