Home / 12,436.90-18,650.40-4,114.60

Finding the Fourth Proportional to 12,436.90, 18,650.40 and 4,114.60

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Solution

The fourth proportional to 12,436.90, 18,650.40 and 4,114.60 is: 6,170.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.90 : 18,650.40 = 4,114.60 : x
  2. Step 2: Convert to fraction form
    12,436.90/18,650.40 = 4,114.60/x
  3. Step 3: Cross multiply
    12,436.90x = 18,650.40 × 4,114.60
  4. Step 4: Simplify right side
    12,436.90x = 76,738,935.84
  5. Step 5: Solve for x
    x = 76,738,935.84/12,436.90
  6. Step 6: Final answer
    x = 6,170.26

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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.