Home / 12,415.75-18,619.65-4,093.90

Finding the Fourth Proportional to 12,415.75, 18,619.65 and 4,093.90

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Solution

The fourth proportional to 12,415.75, 18,619.65 and 4,093.90 is: 6,139.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.75 : 18,619.65 = 4,093.90 : x
  2. Step 2: Convert to fraction form
    12,415.75/18,619.65 = 4,093.90/x
  3. Step 3: Cross multiply
    12,415.75x = 18,619.65 × 4,093.90
  4. Step 4: Simplify right side
    12,415.75x = 76,226,985.14
  5. Step 5: Solve for x
    x = 76,226,985.14/12,415.75
  6. Step 6: Final answer
    x = 6,139.54

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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.