Home / 20,772.69-28,662.94-12,273.63

Finding the Fourth Proportional to 20,772.69, 28,662.94 and 12,273.63

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Solution

The fourth proportional to 20,772.69, 28,662.94 and 12,273.63 is: 16,935.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.69 : 28,662.94 = 12,273.63 : x
  2. Step 2: Convert to fraction form
    20,772.69/28,662.94 = 12,273.63/x
  3. Step 3: Cross multiply
    20,772.69x = 28,662.94 × 12,273.63
  4. Step 4: Simplify right side
    20,772.69x = 351,798,435.45
  5. Step 5: Solve for x
    x = 351,798,435.45/20,772.69
  6. Step 6: Final answer
    x = 16,935.62

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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.