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Finding the Fourth Proportional to 18,257.75, 27,386.69 and 4,406.75

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Solution

The fourth proportional to 18,257.75, 27,386.69 and 4,406.75 is: 6,610.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,257.75 : 27,386.69 = 4,406.75 : x
  2. Step 2: Convert to fraction form
    18,257.75/27,386.69 = 4,406.75/x
  3. Step 3: Cross multiply
    18,257.75x = 27,386.69 × 4,406.75
  4. Step 4: Simplify right side
    18,257.75x = 120,686,296.16
  5. Step 5: Solve for x
    x = 120,686,296.16/18,257.75
  6. Step 6: Final answer
    x = 6,610.14

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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.