Home / 12,648.21-18,974.37-4,751.34

Finding the Fourth Proportional to 12,648.21, 18,974.37 and 4,751.34

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Solution

The fourth proportional to 12,648.21, 18,974.37 and 4,751.34 is: 7,127.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,648.21 : 18,974.37 = 4,751.34 : x
  2. Step 2: Convert to fraction form
    12,648.21/18,974.37 = 4,751.34/x
  3. Step 3: Cross multiply
    12,648.21x = 18,974.37 × 4,751.34
  4. Step 4: Simplify right side
    12,648.21x = 90,153,683.16
  5. Step 5: Solve for x
    x = 90,153,683.16/12,648.21
  6. Step 6: Final answer
    x = 7,127.78

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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.