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Finding the Fourth Proportional to 18,671.51, 27,969.77 and 9,283.14

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Solution

The fourth proportional to 18,671.51, 27,969.77 and 9,283.14 is: 13,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.51 : 27,969.77 = 9,283.14 : x
  2. Step 2: Convert to fraction form
    18,671.51/27,969.77 = 9,283.14/x
  3. Step 3: Cross multiply
    18,671.51x = 27,969.77 × 9,283.14
  4. Step 4: Simplify right side
    18,671.51x = 259,647,313.89
  5. Step 5: Solve for x
    x = 259,647,313.89/18,671.51
  6. Step 6: Final answer
    x = 13,906.07

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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.