Home / 11,987.04-17,986.64-8,083.26

Finding the Fourth Proportional to 11,987.04, 17,986.64 and 8,083.26

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Solution

The fourth proportional to 11,987.04, 17,986.64 and 8,083.26 is: 12,128.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.04 : 17,986.64 = 8,083.26 : x
  2. Step 2: Convert to fraction form
    11,987.04/17,986.64 = 8,083.26/x
  3. Step 3: Cross multiply
    11,987.04x = 17,986.64 × 8,083.26
  4. Step 4: Simplify right side
    11,987.04x = 145,390,687.65
  5. Step 5: Solve for x
    x = 145,390,687.65/11,987.04
  6. Step 6: Final answer
    x = 12,128.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.