Home / 13,855.31-20,778.53-4,493.12

Finding the Fourth Proportional to 13,855.31, 20,778.53 and 4,493.12

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Solution

The fourth proportional to 13,855.31, 20,778.53 and 4,493.12 is: 6,738.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.31 : 20,778.53 = 4,493.12 : x
  2. Step 2: Convert to fraction form
    13,855.31/20,778.53 = 4,493.12/x
  3. Step 3: Cross multiply
    13,855.31x = 20,778.53 × 4,493.12
  4. Step 4: Simplify right side
    13,855.31x = 93,360,491.89
  5. Step 5: Solve for x
    x = 93,360,491.89/13,855.31
  6. Step 6: Final answer
    x = 6,738.25

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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.