Home / 28,245.74-38,975.28-16,912.64

Finding the Fourth Proportional to 28,245.74, 38,975.28 and 16,912.64

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Solution

The fourth proportional to 28,245.74, 38,975.28 and 16,912.64 is: 23,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245.74 : 38,975.28 = 16,912.64 : x
  2. Step 2: Convert to fraction form
    28,245.74/38,975.28 = 16,912.64/x
  3. Step 3: Cross multiply
    28,245.74x = 38,975.28 × 16,912.64
  4. Step 4: Simplify right side
    28,245.74x = 659,174,879.54
  5. Step 5: Solve for x
    x = 659,174,879.54/28,245.74
  6. Step 6: Final answer
    x = 23,337.14

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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.