Home / 19,115.54-28,662.38-7,415.10

Finding the Fourth Proportional to 19,115.54, 28,662.38 and 7,415.10

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Solution

The fourth proportional to 19,115.54, 28,662.38 and 7,415.10 is: 11,118.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115.54 : 28,662.38 = 7,415.10 : x
  2. Step 2: Convert to fraction form
    19,115.54/28,662.38 = 7,415.10/x
  3. Step 3: Cross multiply
    19,115.54x = 28,662.38 × 7,415.10
  4. Step 4: Simplify right side
    19,115.54x = 212,534,413.94
  5. Step 5: Solve for x
    x = 212,534,413.94/19,115.54
  6. Step 6: Final answer
    x = 11,118.41

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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.