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Finding the Fourth Proportional to 12,610.82, 18,918.94 and 6,289.14

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Solution

The fourth proportional to 12,610.82, 18,918.94 and 6,289.14 is: 9,435.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,610.82 : 18,918.94 = 6,289.14 : x
  2. Step 2: Convert to fraction form
    12,610.82/18,918.94 = 6,289.14/x
  3. Step 3: Cross multiply
    12,610.82x = 18,918.94 × 6,289.14
  4. Step 4: Simplify right side
    12,610.82x = 118,983,862.31
  5. Step 5: Solve for x
    x = 118,983,862.31/12,610.82
  6. Step 6: Final answer
    x = 9,435.06

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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.