Home / 11,675.36-16,112.48-6,640.47

Finding the Fourth Proportional to 11,675.36, 16,112.48 and 6,640.47

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Solution

The fourth proportional to 11,675.36, 16,112.48 and 6,640.47 is: 9,164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.36 : 16,112.48 = 6,640.47 : x
  2. Step 2: Convert to fraction form
    11,675.36/16,112.48 = 6,640.47/x
  3. Step 3: Cross multiply
    11,675.36x = 16,112.48 × 6,640.47
  4. Step 4: Simplify right side
    11,675.36x = 106,994,440.07
  5. Step 5: Solve for x
    x = 106,994,440.07/11,675.36
  6. Step 6: Final answer
    x = 9,164.12

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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.