Home / 12,445.53-18,661.95-4,122.54

Finding the Fourth Proportional to 12,445.53, 18,661.95 and 4,122.54

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Solution

The fourth proportional to 12,445.53, 18,661.95 and 4,122.54 is: 6,181.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.53 : 18,661.95 = 4,122.54 : x
  2. Step 2: Convert to fraction form
    12,445.53/18,661.95 = 4,122.54/x
  3. Step 3: Cross multiply
    12,445.53x = 18,661.95 × 4,122.54
  4. Step 4: Simplify right side
    12,445.53x = 76,934,635.35
  5. Step 5: Solve for x
    x = 76,934,635.35/12,445.53
  6. Step 6: Final answer
    x = 6,181.71

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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.