Home / 28,147.20-38,836.71-16,208.34

Finding the Fourth Proportional to 28,147.20, 38,836.71 and 16,208.34

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Solution

The fourth proportional to 28,147.20, 38,836.71 and 16,208.34 is: 22,363.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.20 : 38,836.71 = 16,208.34 : x
  2. Step 2: Convert to fraction form
    28,147.20/38,836.71 = 16,208.34/x
  3. Step 3: Cross multiply
    28,147.20x = 38,836.71 × 16,208.34
  4. Step 4: Simplify right side
    28,147.20x = 629,478,600.16
  5. Step 5: Solve for x
    x = 629,478,600.16/28,147.20
  6. Step 6: Final answer
    x = 22,363.81

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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.