Home / 12,811.45-19,225.81-4,491.54

Finding the Fourth Proportional to 12,811.45, 19,225.81 and 4,491.54

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Solution

The fourth proportional to 12,811.45, 19,225.81 and 4,491.54 is: 6,740.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.45 : 19,225.81 = 4,491.54 : x
  2. Step 2: Convert to fraction form
    12,811.45/19,225.81 = 4,491.54/x
  3. Step 3: Cross multiply
    12,811.45x = 19,225.81 × 4,491.54
  4. Step 4: Simplify right side
    12,811.45x = 86,353,494.65
  5. Step 5: Solve for x
    x = 86,353,494.65/12,811.45
  6. Step 6: Final answer
    x = 6,740.34

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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.