Home / 20,205.60-30,307.72-5,413.74

Finding the Fourth Proportional to 20,205.60, 30,307.72 and 5,413.74

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Solution

The fourth proportional to 20,205.60, 30,307.72 and 5,413.74 is: 8,120.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,205.60 : 30,307.72 = 5,413.74 : x
  2. Step 2: Convert to fraction form
    20,205.60/30,307.72 = 5,413.74/x
  3. Step 3: Cross multiply
    20,205.60x = 30,307.72 × 5,413.74
  4. Step 4: Simplify right side
    20,205.60x = 164,077,999.04
  5. Step 5: Solve for x
    x = 164,077,999.04/20,205.60
  6. Step 6: Final answer
    x = 8,120.42

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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.