Home / 18,060.40-27,090.64-4,912.80

Finding the Fourth Proportional to 18,060.40, 27,090.64 and 4,912.80

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Solution

The fourth proportional to 18,060.40, 27,090.64 and 4,912.80 is: 7,369.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,060.40 : 27,090.64 = 4,912.80 : x
  2. Step 2: Convert to fraction form
    18,060.40/27,090.64 = 4,912.80/x
  3. Step 3: Cross multiply
    18,060.40x = 27,090.64 × 4,912.80
  4. Step 4: Simplify right side
    18,060.40x = 133,090,896.19
  5. Step 5: Solve for x
    x = 133,090,896.19/18,060.40
  6. Step 6: Final answer
    x = 7,369.21

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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.