Home / 13,868.56-19,131.96-8,561.44

Finding the Fourth Proportional to 13,868.56, 19,131.96 and 8,561.44

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Solution

The fourth proportional to 13,868.56, 19,131.96 and 8,561.44 is: 11,810.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.56 : 19,131.96 = 8,561.44 : x
  2. Step 2: Convert to fraction form
    13,868.56/19,131.96 = 8,561.44/x
  3. Step 3: Cross multiply
    13,868.56x = 19,131.96 × 8,561.44
  4. Step 4: Simplify right side
    13,868.56x = 163,797,127.62
  5. Step 5: Solve for x
    x = 163,797,127.62/13,868.56
  6. Step 6: Final answer
    x = 11,810.68

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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.