Home / 11,761.78-17,649.60-4,745.20

Finding the Fourth Proportional to 11,761.78, 17,649.60 and 4,745.20

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Solution

The fourth proportional to 11,761.78, 17,649.60 and 4,745.20 is: 7,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.78 : 17,649.60 = 4,745.20 : x
  2. Step 2: Convert to fraction form
    11,761.78/17,649.60 = 4,745.20/x
  3. Step 3: Cross multiply
    11,761.78x = 17,649.60 × 4,745.20
  4. Step 4: Simplify right side
    11,761.78x = 83,750,881.92
  5. Step 5: Solve for x
    x = 83,750,881.92/11,761.78
  6. Step 6: Final answer
    x = 7,120.60

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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.