Home / 11,904.37-17,855.12-3,139.95

Finding the Fourth Proportional to 11,904.37, 17,855.12 and 3,139.95

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Solution

The fourth proportional to 11,904.37, 17,855.12 and 3,139.95 is: 4,709.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,904.37 : 17,855.12 = 3,139.95 : x
  2. Step 2: Convert to fraction form
    11,904.37/17,855.12 = 3,139.95/x
  3. Step 3: Cross multiply
    11,904.37x = 17,855.12 × 3,139.95
  4. Step 4: Simplify right side
    11,904.37x = 56,064,079.07
  5. Step 5: Solve for x
    x = 56,064,079.07/11,904.37
  6. Step 6: Final answer
    x = 4,709.54

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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.