Home / 20,223.78-30,334.74-7,749.66

Finding the Fourth Proportional to 20,223.78, 30,334.74 and 7,749.66

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Solution

The fourth proportional to 20,223.78, 30,334.74 and 7,749.66 is: 11,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.78 : 30,334.74 = 7,749.66 : x
  2. Step 2: Convert to fraction form
    20,223.78/30,334.74 = 7,749.66/x
  3. Step 3: Cross multiply
    20,223.78x = 30,334.74 × 7,749.66
  4. Step 4: Simplify right side
    20,223.78x = 235,083,921.19
  5. Step 5: Solve for x
    x = 235,083,921.19/20,223.78
  6. Step 6: Final answer
    x = 11,624.13

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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.