Home / 28,912.21-43,368.32-9,190.77

Finding the Fourth Proportional to 28,912.21, 43,368.32 and 9,190.77

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Solution

The fourth proportional to 28,912.21, 43,368.32 and 9,190.77 is: 13,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.21 : 43,368.32 = 9,190.77 : x
  2. Step 2: Convert to fraction form
    28,912.21/43,368.32 = 9,190.77/x
  3. Step 3: Cross multiply
    28,912.21x = 43,368.32 × 9,190.77
  4. Step 4: Simplify right side
    28,912.21x = 398,588,254.41
  5. Step 5: Solve for x
    x = 398,588,254.41/28,912.21
  6. Step 6: Final answer
    x = 13,786.16

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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.