Home / 13,871.24-19,136.80-8,556.80

Finding the Fourth Proportional to 13,871.24, 19,136.80 and 8,556.80

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Solution

The fourth proportional to 13,871.24, 19,136.80 and 8,556.80 is: 11,804.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,871.24 : 19,136.80 = 8,556.80 : x
  2. Step 2: Convert to fraction form
    13,871.24/19,136.80 = 8,556.80/x
  3. Step 3: Cross multiply
    13,871.24x = 19,136.80 × 8,556.80
  4. Step 4: Simplify right side
    13,871.24x = 163,749,770.24
  5. Step 5: Solve for x
    x = 163,749,770.24/13,871.24
  6. Step 6: Final answer
    x = 11,804.98

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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.