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Finding the Fourth Proportional to 18,537.56, 27,806.22 and 4,686.56

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Solution

The fourth proportional to 18,537.56, 27,806.22 and 4,686.56 is: 7,029.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.56 : 27,806.22 = 4,686.56 : x
  2. Step 2: Convert to fraction form
    18,537.56/27,806.22 = 4,686.56/x
  3. Step 3: Cross multiply
    18,537.56x = 27,806.22 × 4,686.56
  4. Step 4: Simplify right side
    18,537.56x = 130,315,518.40
  5. Step 5: Solve for x
    x = 130,315,518.40/18,537.56
  6. Step 6: Final answer
    x = 7,029.81

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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.