Home / 28,785-43,183.38-12,145.08

Finding the Fourth Proportional to 28,785, 43,183.38 and 12,145.08

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Solution

The fourth proportional to 28,785, 43,183.38 and 12,145.08 is: 18,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785 : 43,183.38 = 12,145.08 : x
  2. Step 2: Convert to fraction form
    28,785/43,183.38 = 12,145.08/x
  3. Step 3: Cross multiply
    28,785x = 43,183.38 × 12,145.08
  4. Step 4: Simplify right side
    28,785x = 524,465,604.77
  5. Step 5: Solve for x
    x = 524,465,604.77/28,785
  6. Step 6: Final answer
    x = 18,220.10

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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.