Home / 11,664.78-16,090.70-7,187.64

Finding the Fourth Proportional to 11,664.78, 16,090.70 and 7,187.64

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Solution

The fourth proportional to 11,664.78, 16,090.70 and 7,187.64 is: 9,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,664.78 : 16,090.70 = 7,187.64 : x
  2. Step 2: Convert to fraction form
    11,664.78/16,090.70 = 7,187.64/x
  3. Step 3: Cross multiply
    11,664.78x = 16,090.70 × 7,187.64
  4. Step 4: Simplify right side
    11,664.78x = 115,654,123.01
  5. Step 5: Solve for x
    x = 115,654,123.01/11,664.78
  6. Step 6: Final answer
    x = 9,914.81

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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.