Home / 20,998.32-28,976.18-12,045.60

Finding the Fourth Proportional to 20,998.32, 28,976.18 and 12,045.60

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Solution

The fourth proportional to 20,998.32, 28,976.18 and 12,045.60 is: 16,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998.32 : 28,976.18 = 12,045.60 : x
  2. Step 2: Convert to fraction form
    20,998.32/28,976.18 = 12,045.60/x
  3. Step 3: Cross multiply
    20,998.32x = 28,976.18 × 12,045.60
  4. Step 4: Simplify right side
    20,998.32x = 349,035,413.58
  5. Step 5: Solve for x
    x = 349,035,413.58/20,998.32
  6. Step 6: Final answer
    x = 16,622.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.