Home / 20,400.18-30,601.35-5,608.77

Finding the Fourth Proportional to 20,400.18, 30,601.35 and 5,608.77

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Solution

The fourth proportional to 20,400.18, 30,601.35 and 5,608.77 is: 8,413.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.18 : 30,601.35 = 5,608.77 : x
  2. Step 2: Convert to fraction form
    20,400.18/30,601.35 = 5,608.77/x
  3. Step 3: Cross multiply
    20,400.18x = 30,601.35 × 5,608.77
  4. Step 4: Simplify right side
    20,400.18x = 171,635,933.84
  5. Step 5: Solve for x
    x = 171,635,933.84/20,400.18
  6. Step 6: Final answer
    x = 8,413.45

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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.