Home / 28,765.75-39,698.90-16,190.23

Finding the Fourth Proportional to 28,765.75, 39,698.90 and 16,190.23

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Solution

The fourth proportional to 28,765.75, 39,698.90 and 16,190.23 is: 22,343.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,765.75 : 39,698.90 = 16,190.23 : x
  2. Step 2: Convert to fraction form
    28,765.75/39,698.90 = 16,190.23/x
  3. Step 3: Cross multiply
    28,765.75x = 39,698.90 × 16,190.23
  4. Step 4: Simplify right side
    28,765.75x = 642,734,321.75
  5. Step 5: Solve for x
    x = 642,734,321.75/28,765.75
  6. Step 6: Final answer
    x = 22,343.74

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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.