Home / 20,816.86-31,200.44-10,951.06

Finding the Fourth Proportional to 20,816.86, 31,200.44 and 10,951.06

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Solution

The fourth proportional to 20,816.86, 31,200.44 and 10,951.06 is: 16,413.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816.86 : 31,200.44 = 10,951.06 : x
  2. Step 2: Convert to fraction form
    20,816.86/31,200.44 = 10,951.06/x
  3. Step 3: Cross multiply
    20,816.86x = 31,200.44 × 10,951.06
  4. Step 4: Simplify right side
    20,816.86x = 341,677,890.47
  5. Step 5: Solve for x
    x = 341,677,890.47/20,816.86
  6. Step 6: Final answer
    x = 16,413.52

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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.