Home / 12,688.23-19,033.25-3,922

Finding the Fourth Proportional to 12,688.23, 19,033.25 and 3,922

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Solution

The fourth proportional to 12,688.23, 19,033.25 and 3,922 is: 5,883.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,688.23 : 19,033.25 = 3,922 : x
  2. Step 2: Convert to fraction form
    12,688.23/19,033.25 = 3,922/x
  3. Step 3: Cross multiply
    12,688.23x = 19,033.25 × 3,922
  4. Step 4: Simplify right side
    12,688.23x = 74,648,406.50
  5. Step 5: Solve for x
    x = 74,648,406.50/12,688.23
  6. Step 6: Final answer
    x = 5,883.28

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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.