Home / 18,907.86-28,359.36-6,427.38

Finding the Fourth Proportional to 18,907.86, 28,359.36 and 6,427.38

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Solution

The fourth proportional to 18,907.86, 28,359.36 and 6,427.38 is: 9,640.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.86 : 28,359.36 = 6,427.38 : x
  2. Step 2: Convert to fraction form
    18,907.86/28,359.36 = 6,427.38/x
  3. Step 3: Cross multiply
    18,907.86x = 28,359.36 × 6,427.38
  4. Step 4: Simplify right side
    18,907.86x = 182,276,383.28
  5. Step 5: Solve for x
    x = 182,276,383.28/18,907.86
  6. Step 6: Final answer
    x = 9,640.24

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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.