Home / 13,413.30-20,119.32-6,388.20

Finding the Fourth Proportional to 13,413.30, 20,119.32 and 6,388.20

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Solution

The fourth proportional to 13,413.30, 20,119.32 and 6,388.20 is: 9,582.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,413.30 : 20,119.32 = 6,388.20 : x
  2. Step 2: Convert to fraction form
    13,413.30/20,119.32 = 6,388.20/x
  3. Step 3: Cross multiply
    13,413.30x = 20,119.32 × 6,388.20
  4. Step 4: Simplify right side
    13,413.30x = 128,526,240.02
  5. Step 5: Solve for x
    x = 128,526,240.02/13,413.30
  6. Step 6: Final answer
    x = 9,582.00

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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.