Home / 20,933.23-28,879.67-11,975.93

Finding the Fourth Proportional to 20,933.23, 28,879.67 and 11,975.93

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Solution

The fourth proportional to 20,933.23, 28,879.67 and 11,975.93 is: 16,522.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,933.23 : 28,879.67 = 11,975.93 : x
  2. Step 2: Convert to fraction form
    20,933.23/28,879.67 = 11,975.93/x
  3. Step 3: Cross multiply
    20,933.23x = 28,879.67 × 11,975.93
  4. Step 4: Simplify right side
    20,933.23x = 345,861,008.48
  5. Step 5: Solve for x
    x = 345,861,008.48/20,933.23
  6. Step 6: Final answer
    x = 16,522.11

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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.