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Finding the Fourth Proportional to 18,459.36, 27,689.04 and 4,608.36

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Solution

The fourth proportional to 18,459.36, 27,689.04 and 4,608.36 is: 6,912.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,459.36 : 27,689.04 = 4,608.36 : x
  2. Step 2: Convert to fraction form
    18,459.36/27,689.04 = 4,608.36/x
  3. Step 3: Cross multiply
    18,459.36x = 27,689.04 × 4,608.36
  4. Step 4: Simplify right side
    18,459.36x = 127,601,064.37
  5. Step 5: Solve for x
    x = 127,601,064.37/18,459.36
  6. Step 6: Final answer
    x = 6,912.54

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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.