Home / 13,638.41-18,739.44-10,839.05

Finding the Fourth Proportional to 13,638.41, 18,739.44 and 10,839.05

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Solution

The fourth proportional to 13,638.41, 18,739.44 and 10,839.05 is: 14,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.41 : 18,739.44 = 10,839.05 : x
  2. Step 2: Convert to fraction form
    13,638.41/18,739.44 = 10,839.05/x
  3. Step 3: Cross multiply
    13,638.41x = 18,739.44 × 10,839.05
  4. Step 4: Simplify right side
    13,638.41x = 203,117,754.23
  5. Step 5: Solve for x
    x = 203,117,754.23/13,638.41
  6. Step 6: Final answer
    x = 14,893.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.