Home / 27,736.16-38,261.40-18,786.80

Finding the Fourth Proportional to 27,736.16, 38,261.40 and 18,786.80

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Solution

The fourth proportional to 27,736.16, 38,261.40 and 18,786.80 is: 25,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,736.16 : 38,261.40 = 18,786.80 : x
  2. Step 2: Convert to fraction form
    27,736.16/38,261.40 = 18,786.80/x
  3. Step 3: Cross multiply
    27,736.16x = 38,261.40 × 18,786.80
  4. Step 4: Simplify right side
    27,736.16x = 718,809,269.52
  5. Step 5: Solve for x
    x = 718,809,269.52/27,736.16
  6. Step 6: Final answer
    x = 25,915.96

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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.