Home / 18,971.82-28,459.12-7,285.04

Finding the Fourth Proportional to 18,971.82, 28,459.12 and 7,285.04

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Solution

The fourth proportional to 18,971.82, 28,459.12 and 7,285.04 is: 10,928.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.82 : 28,459.12 = 7,285.04 : x
  2. Step 2: Convert to fraction form
    18,971.82/28,459.12 = 7,285.04/x
  3. Step 3: Cross multiply
    18,971.82x = 28,459.12 × 7,285.04
  4. Step 4: Simplify right side
    18,971.82x = 207,325,827.56
  5. Step 5: Solve for x
    x = 207,325,827.56/18,971.82
  6. Step 6: Final answer
    x = 10,928.09

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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.