Home / 20,413.28-30,620.56-5,622.08

Finding the Fourth Proportional to 20,413.28, 30,620.56 and 5,622.08

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Solution

The fourth proportional to 20,413.28, 30,620.56 and 5,622.08 is: 8,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.28 : 30,620.56 = 5,622.08 : x
  2. Step 2: Convert to fraction form
    20,413.28/30,620.56 = 5,622.08/x
  3. Step 3: Cross multiply
    20,413.28x = 30,620.56 × 5,622.08
  4. Step 4: Simplify right side
    20,413.28x = 172,151,237.96
  5. Step 5: Solve for x
    x = 172,151,237.96/20,413.28
  6. Step 6: Final answer
    x = 8,433.30

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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.