Home / 12,583.15-18,878.37-5,183.80

Finding the Fourth Proportional to 12,583.15, 18,878.37 and 5,183.80

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Solution

The fourth proportional to 12,583.15, 18,878.37 and 5,183.80 is: 7,777.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,583.15 : 18,878.37 = 5,183.80 : x
  2. Step 2: Convert to fraction form
    12,583.15/18,878.37 = 5,183.80/x
  3. Step 3: Cross multiply
    12,583.15x = 18,878.37 × 5,183.80
  4. Step 4: Simplify right side
    12,583.15x = 97,861,627.77
  5. Step 5: Solve for x
    x = 97,861,627.77/12,583.15
  6. Step 6: Final answer
    x = 7,777.20

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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.