Home / 18,085.90-27,130.20-6,397.60

Finding the Fourth Proportional to 18,085.90, 27,130.20 and 6,397.60

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Solution

The fourth proportional to 18,085.90, 27,130.20 and 6,397.60 is: 9,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.90 : 27,130.20 = 6,397.60 : x
  2. Step 2: Convert to fraction form
    18,085.90/27,130.20 = 6,397.60/x
  3. Step 3: Cross multiply
    18,085.90x = 27,130.20 × 6,397.60
  4. Step 4: Simplify right side
    18,085.90x = 173,568,167.52
  5. Step 5: Solve for x
    x = 173,568,167.52/18,085.90
  6. Step 6: Final answer
    x = 9,596.88

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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.