Home / 12,211.56-18,317.26-4,420.36

Finding the Fourth Proportional to 12,211.56, 18,317.26 and 4,420.36

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Solution

The fourth proportional to 12,211.56, 18,317.26 and 4,420.36 is: 6,630.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,211.56 : 18,317.26 = 4,420.36 : x
  2. Step 2: Convert to fraction form
    12,211.56/18,317.26 = 4,420.36/x
  3. Step 3: Cross multiply
    12,211.56x = 18,317.26 × 4,420.36
  4. Step 4: Simplify right side
    12,211.56x = 80,968,883.41
  5. Step 5: Solve for x
    x = 80,968,883.41/12,211.56
  6. Step 6: Final answer
    x = 6,630.51

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1.5x scale

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.