Home / 18,927.78-28,395.10-7,828.44

Finding the Fourth Proportional to 18,927.78, 28,395.10 and 7,828.44

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Solution

The fourth proportional to 18,927.78, 28,395.10 and 7,828.44 is: 11,744.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.78 : 28,395.10 = 7,828.44 : x
  2. Step 2: Convert to fraction form
    18,927.78/28,395.10 = 7,828.44/x
  3. Step 3: Cross multiply
    18,927.78x = 28,395.10 × 7,828.44
  4. Step 4: Simplify right side
    18,927.78x = 222,289,336.64
  5. Step 5: Solve for x
    x = 222,289,336.64/18,927.78
  6. Step 6: Final answer
    x = 11,744.08

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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.