Home / 18,085.90-27,132.90-6,991.60

Finding the Fourth Proportional to 18,085.90, 27,132.90 and 6,991.60

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Solution

The fourth proportional to 18,085.90, 27,132.90 and 6,991.60 is: 10,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.90 : 27,132.90 = 6,991.60 : x
  2. Step 2: Convert to fraction form
    18,085.90/27,132.90 = 6,991.60/x
  3. Step 3: Cross multiply
    18,085.90x = 27,132.90 × 6,991.60
  4. Step 4: Simplify right side
    18,085.90x = 189,702,383.64
  5. Step 5: Solve for x
    x = 189,702,383.64/18,085.90
  6. Step 6: Final answer
    x = 10,488.97

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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.