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Finding the Fourth Proportional to 18,085.20, 27,106.20 and 7,555.20

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Solution

The fourth proportional to 18,085.20, 27,106.20 and 7,555.20 is: 11,323.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.20 : 27,106.20 = 7,555.20 : x
  2. Step 2: Convert to fraction form
    18,085.20/27,106.20 = 7,555.20/x
  3. Step 3: Cross multiply
    18,085.20x = 27,106.20 × 7,555.20
  4. Step 4: Simplify right side
    18,085.20x = 204,792,762.24
  5. Step 5: Solve for x
    x = 204,792,762.24/18,085.20
  6. Step 6: Final answer
    x = 11,323.78

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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.