Home / 13,761.63-20,650.64-4,997.21

Finding the Fourth Proportional to 13,761.63, 20,650.64 and 4,997.21

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Solution

The fourth proportional to 13,761.63, 20,650.64 and 4,997.21 is: 7,498.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.63 : 20,650.64 = 4,997.21 : x
  2. Step 2: Convert to fraction form
    13,761.63/20,650.64 = 4,997.21/x
  3. Step 3: Cross multiply
    13,761.63x = 20,650.64 × 4,997.21
  4. Step 4: Simplify right side
    13,761.63x = 103,195,456.48
  5. Step 5: Solve for x
    x = 103,195,456.48/13,761.63
  6. Step 6: Final answer
    x = 7,498.78

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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.