Home / 13,764.35-20,642.47-3,904.49

Finding the Fourth Proportional to 13,764.35, 20,642.47 and 3,904.49

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Solution

The fourth proportional to 13,764.35, 20,642.47 and 3,904.49 is: 5,855.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,764.35 : 20,642.47 = 3,904.49 : x
  2. Step 2: Convert to fraction form
    13,764.35/20,642.47 = 3,904.49/x
  3. Step 3: Cross multiply
    13,764.35x = 20,642.47 × 3,904.49
  4. Step 4: Simplify right side
    13,764.35x = 80,598,317.69
  5. Step 5: Solve for x
    x = 80,598,317.69/13,764.35
  6. Step 6: Final answer
    x = 5,855.58

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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.