Home / 28,869.64-39,836.22-16,121.32

Finding the Fourth Proportional to 28,869.64, 39,836.22 and 16,121.32

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Solution

The fourth proportional to 28,869.64, 39,836.22 and 16,121.32 is: 22,245.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,869.64 : 39,836.22 = 16,121.32 : x
  2. Step 2: Convert to fraction form
    28,869.64/39,836.22 = 16,121.32/x
  3. Step 3: Cross multiply
    28,869.64x = 39,836.22 × 16,121.32
  4. Step 4: Simplify right side
    28,869.64x = 642,212,450.21
  5. Step 5: Solve for x
    x = 642,212,450.21/28,869.64
  6. Step 6: Final answer
    x = 22,245.25

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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.