Home / 12,986.13-17,899.92-11,280.27

Finding the Fourth Proportional to 12,986.13, 17,899.92 and 11,280.27

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Solution

The fourth proportional to 12,986.13, 17,899.92 and 11,280.27 is: 15,548.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.13 : 17,899.92 = 11,280.27 : x
  2. Step 2: Convert to fraction form
    12,986.13/17,899.92 = 11,280.27/x
  3. Step 3: Cross multiply
    12,986.13x = 17,899.92 × 11,280.27
  4. Step 4: Simplify right side
    12,986.13x = 201,915,930.58
  5. Step 5: Solve for x
    x = 201,915,930.58/12,986.13
  6. Step 6: Final answer
    x = 15,548.58

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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.