Home / 18,972.33-28,459.86-7,285.54

Finding the Fourth Proportional to 18,972.33, 28,459.86 and 7,285.54

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Solution

The fourth proportional to 18,972.33, 28,459.86 and 7,285.54 is: 10,928.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,972.33 : 28,459.86 = 7,285.54 : x
  2. Step 2: Convert to fraction form
    18,972.33/28,459.86 = 7,285.54/x
  3. Step 3: Cross multiply
    18,972.33x = 28,459.86 × 7,285.54
  4. Step 4: Simplify right side
    18,972.33x = 207,345,448.42
  5. Step 5: Solve for x
    x = 207,345,448.42/18,972.33
  6. Step 6: Final answer
    x = 10,928.83

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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.