Home / 12,455.06-18,684.45-3,688.83

Finding the Fourth Proportional to 12,455.06, 18,684.45 and 3,688.83

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Solution

The fourth proportional to 12,455.06, 18,684.45 and 3,688.83 is: 5,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.06 : 18,684.45 = 3,688.83 : x
  2. Step 2: Convert to fraction form
    12,455.06/18,684.45 = 3,688.83/x
  3. Step 3: Cross multiply
    12,455.06x = 18,684.45 × 3,688.83
  4. Step 4: Simplify right side
    12,455.06x = 68,923,759.69
  5. Step 5: Solve for x
    x = 68,923,759.69/12,455.06
  6. Step 6: Final answer
    x = 5,533.80

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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.