Home / 12,552.08-18,829.40-3,318.80

Finding the Fourth Proportional to 12,552.08, 18,829.40 and 3,318.80

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Solution

The fourth proportional to 12,552.08, 18,829.40 and 3,318.80 is: 4,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,552.08 : 18,829.40 = 3,318.80 : x
  2. Step 2: Convert to fraction form
    12,552.08/18,829.40 = 3,318.80/x
  3. Step 3: Cross multiply
    12,552.08x = 18,829.40 × 3,318.80
  4. Step 4: Simplify right side
    12,552.08x = 62,491,012.72
  5. Step 5: Solve for x
    x = 62,491,012.72/12,552.08
  6. Step 6: Final answer
    x = 4,978.54

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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.