Home / 12,619.45-18,917.12-4,719.83

Finding the Fourth Proportional to 12,619.45, 18,917.12 and 4,719.83

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Solution

The fourth proportional to 12,619.45, 18,917.12 and 4,719.83 is: 7,075.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.45 : 18,917.12 = 4,719.83 : x
  2. Step 2: Convert to fraction form
    12,619.45/18,917.12 = 4,719.83/x
  3. Step 3: Cross multiply
    12,619.45x = 18,917.12 × 4,719.83
  4. Step 4: Simplify right side
    12,619.45x = 89,285,507.70
  5. Step 5: Solve for x
    x = 89,285,507.70/12,619.45
  6. Step 6: Final answer
    x = 7,075.23

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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.