Home / 11,675.45-16,112.58-6,640.13

Finding the Fourth Proportional to 11,675.45, 16,112.58 and 6,640.13

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Solution

The fourth proportional to 11,675.45, 16,112.58 and 6,640.13 is: 9,163.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.45 : 16,112.58 = 6,640.13 : x
  2. Step 2: Convert to fraction form
    11,675.45/16,112.58 = 6,640.13/x
  3. Step 3: Cross multiply
    11,675.45x = 16,112.58 × 6,640.13
  4. Step 4: Simplify right side
    11,675.45x = 106,989,641.22
  5. Step 5: Solve for x
    x = 106,989,641.22/11,675.45
  6. Step 6: Final answer
    x = 9,163.64

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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.