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Finding the Fourth Proportional to 18,090.81, 27,132.62 and 4,940.06

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Solution

The fourth proportional to 18,090.81, 27,132.62 and 4,940.06 is: 7,409.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.81 : 27,132.62 = 4,940.06 : x
  2. Step 2: Convert to fraction form
    18,090.81/27,132.62 = 4,940.06/x
  3. Step 3: Cross multiply
    18,090.81x = 27,132.62 × 4,940.06
  4. Step 4: Simplify right side
    18,090.81x = 134,036,610.39
  5. Step 5: Solve for x
    x = 134,036,610.39/18,090.81
  6. Step 6: Final answer
    x = 7,409.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.