Home / 28,669.72-43,021.16-12,028.24

Finding the Fourth Proportional to 28,669.72, 43,021.16 and 12,028.24

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Solution

The fourth proportional to 28,669.72, 43,021.16 and 12,028.24 is: 18,049.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.72 : 43,021.16 = 12,028.24 : x
  2. Step 2: Convert to fraction form
    28,669.72/43,021.16 = 12,028.24/x
  3. Step 3: Cross multiply
    28,669.72x = 43,021.16 × 12,028.24
  4. Step 4: Simplify right side
    28,669.72x = 517,468,837.56
  5. Step 5: Solve for x
    x = 517,468,837.56/28,669.72
  6. Step 6: Final answer
    x = 18,049.32

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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.