Home / 28,436.36-39,243.96-15,861.08

Finding the Fourth Proportional to 28,436.36, 39,243.96 and 15,861.08

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Solution

The fourth proportional to 28,436.36, 39,243.96 and 15,861.08 is: 21,889.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.36 : 39,243.96 = 15,861.08 : x
  2. Step 2: Convert to fraction form
    28,436.36/39,243.96 = 15,861.08/x
  3. Step 3: Cross multiply
    28,436.36x = 39,243.96 × 15,861.08
  4. Step 4: Simplify right side
    28,436.36x = 622,451,589.08
  5. Step 5: Solve for x
    x = 622,451,589.08/28,436.36
  6. Step 6: Final answer
    x = 21,889.29

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1.5x scale

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.