Home / 13,840.74-20,764.40-4,480.76

Finding the Fourth Proportional to 13,840.74, 20,764.40 and 4,480.76

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Solution

The fourth proportional to 13,840.74, 20,764.40 and 4,480.76 is: 6,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.74 : 20,764.40 = 4,480.76 : x
  2. Step 2: Convert to fraction form
    13,840.74/20,764.40 = 4,480.76/x
  3. Step 3: Cross multiply
    13,840.74x = 20,764.40 × 4,480.76
  4. Step 4: Simplify right side
    13,840.74x = 93,040,292.94
  5. Step 5: Solve for x
    x = 93,040,292.94/13,840.74
  6. Step 6: Final answer
    x = 6,722.21

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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.