Home / 11,745.48-16,208.67-6,440.20

Finding the Fourth Proportional to 11,745.48, 16,208.67 and 6,440.20

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Solution

The fourth proportional to 11,745.48, 16,208.67 and 6,440.20 is: 8,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.48 : 16,208.67 = 6,440.20 : x
  2. Step 2: Convert to fraction form
    11,745.48/16,208.67 = 6,440.20/x
  3. Step 3: Cross multiply
    11,745.48x = 16,208.67 × 6,440.20
  4. Step 4: Simplify right side
    11,745.48x = 104,387,076.53
  5. Step 5: Solve for x
    x = 104,387,076.53/11,745.48
  6. Step 6: Final answer
    x = 8,887.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.