Home / 21,413.79-32,108.94-6,618.60

Finding the Fourth Proportional to 21,413.79, 32,108.94 and 6,618.60

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Solution

The fourth proportional to 21,413.79, 32,108.94 and 6,618.60 is: 9,924.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,413.79 : 32,108.94 = 6,618.60 : x
  2. Step 2: Convert to fraction form
    21,413.79/32,108.94 = 6,618.60/x
  3. Step 3: Cross multiply
    21,413.79x = 32,108.94 × 6,618.60
  4. Step 4: Simplify right side
    21,413.79x = 212,516,230.28
  5. Step 5: Solve for x
    x = 212,516,230.28/21,413.79
  6. Step 6: Final answer
    x = 9,924.27

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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.