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Finding the Fourth Proportional to 12,028.14, 17,998.47 and 9,928.62

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Solution

The fourth proportional to 12,028.14, 17,998.47 and 9,928.62 is: 14,856.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,028.14 : 17,998.47 = 9,928.62 : x
  2. Step 2: Convert to fraction form
    12,028.14/17,998.47 = 9,928.62/x
  3. Step 3: Cross multiply
    12,028.14x = 17,998.47 × 9,928.62
  4. Step 4: Simplify right side
    12,028.14x = 178,699,969.21
  5. Step 5: Solve for x
    x = 178,699,969.21/12,028.14
  6. Step 6: Final answer
    x = 14,856.82

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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.