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Finding the Fourth Proportional to 11,969.51, 16,517.93 and 6,664.82

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Solution

The fourth proportional to 11,969.51, 16,517.93 and 6,664.82 is: 9,197.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.51 : 16,517.93 = 6,664.82 : x
  2. Step 2: Convert to fraction form
    11,969.51/16,517.93 = 6,664.82/x
  3. Step 3: Cross multiply
    11,969.51x = 16,517.93 × 6,664.82
  4. Step 4: Simplify right side
    11,969.51x = 110,088,914.31
  5. Step 5: Solve for x
    x = 110,088,914.31/11,969.51
  6. Step 6: Final answer
    x = 9,197.45

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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.