Home / 12,188.08-18,273.84-3,865.36

Finding the Fourth Proportional to 12,188.08, 18,273.84 and 3,865.36

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Solution

The fourth proportional to 12,188.08, 18,273.84 and 3,865.36 is: 5,795.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.08 : 18,273.84 = 3,865.36 : x
  2. Step 2: Convert to fraction form
    12,188.08/18,273.84 = 3,865.36/x
  3. Step 3: Cross multiply
    12,188.08x = 18,273.84 × 3,865.36
  4. Step 4: Simplify right side
    12,188.08x = 70,634,970.18
  5. Step 5: Solve for x
    x = 70,634,970.18/12,188.08
  6. Step 6: Final answer
    x = 5,795.41

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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.