Home / 20,261.85-30,386.20-6,749.43

Finding the Fourth Proportional to 20,261.85, 30,386.20 and 6,749.43

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Solution

The fourth proportional to 20,261.85, 30,386.20 and 6,749.43 is: 10,121.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,261.85 : 30,386.20 = 6,749.43 : x
  2. Step 2: Convert to fraction form
    20,261.85/30,386.20 = 6,749.43/x
  3. Step 3: Cross multiply
    20,261.85x = 30,386.20 × 6,749.43
  4. Step 4: Simplify right side
    20,261.85x = 205,089,529.87
  5. Step 5: Solve for x
    x = 205,089,529.87/20,261.85
  6. Step 6: Final answer
    x = 10,121.95

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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.