Home / 12,122.61-18,183.91-3,357.60

Finding the Fourth Proportional to 12,122.61, 18,183.91 and 3,357.60

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Solution

The fourth proportional to 12,122.61, 18,183.91 and 3,357.60 is: 5,036.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,122.61 : 18,183.91 = 3,357.60 : x
  2. Step 2: Convert to fraction form
    12,122.61/18,183.91 = 3,357.60/x
  3. Step 3: Cross multiply
    12,122.61x = 18,183.91 × 3,357.60
  4. Step 4: Simplify right side
    12,122.61x = 61,054,296.22
  5. Step 5: Solve for x
    x = 61,054,296.22/12,122.61
  6. Step 6: Final answer
    x = 5,036.40

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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.