Home / 13,539.87-20,307.78-4,772.73

Finding the Fourth Proportional to 13,539.87, 20,307.78 and 4,772.73

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Solution

The fourth proportional to 13,539.87, 20,307.78 and 4,772.73 is: 7,158.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.87 : 20,307.78 = 4,772.73 : x
  2. Step 2: Convert to fraction form
    13,539.87/20,307.78 = 4,772.73/x
  3. Step 3: Cross multiply
    13,539.87x = 20,307.78 × 4,772.73
  4. Step 4: Simplify right side
    13,539.87x = 96,923,626.99
  5. Step 5: Solve for x
    x = 96,923,626.99/13,539.87
  6. Step 6: Final answer
    x = 7,158.39

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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.