Home / 12,155.36-18,231.35-4,764.96

Finding the Fourth Proportional to 12,155.36, 18,231.35 and 4,764.96

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Solution

The fourth proportional to 12,155.36, 18,231.35 and 4,764.96 is: 7,146.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.36 : 18,231.35 = 4,764.96 : x
  2. Step 2: Convert to fraction form
    12,155.36/18,231.35 = 4,764.96/x
  3. Step 3: Cross multiply
    12,155.36x = 18,231.35 × 4,764.96
  4. Step 4: Simplify right side
    12,155.36x = 86,871,629.67
  5. Step 5: Solve for x
    x = 86,871,629.67/12,155.36
  6. Step 6: Final answer
    x = 7,146.78

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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.