Home / 18,183.75-25,072.88-12,804.47

Finding the Fourth Proportional to 18,183.75, 25,072.88 and 12,804.47

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Solution

The fourth proportional to 18,183.75, 25,072.88 and 12,804.47 is: 17,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,183.75 : 25,072.88 = 12,804.47 : x
  2. Step 2: Convert to fraction form
    18,183.75/25,072.88 = 12,804.47/x
  3. Step 3: Cross multiply
    18,183.75x = 25,072.88 × 12,804.47
  4. Step 4: Simplify right side
    18,183.75x = 321,044,939.77
  5. Step 5: Solve for x
    x = 321,044,939.77/18,183.75
  6. Step 6: Final answer
    x = 17,655.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.