Home / 18,685.38-28,035.36-10,783.73

Finding the Fourth Proportional to 18,685.38, 28,035.36 and 10,783.73

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Solution

The fourth proportional to 18,685.38, 28,035.36 and 10,783.73 is: 16,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,685.38 : 28,035.36 = 10,783.73 : x
  2. Step 2: Convert to fraction form
    18,685.38/28,035.36 = 10,783.73/x
  3. Step 3: Cross multiply
    18,685.38x = 28,035.36 × 10,783.73
  4. Step 4: Simplify right side
    18,685.38x = 302,325,752.69
  5. Step 5: Solve for x
    x = 302,325,752.69/18,685.38
  6. Step 6: Final answer
    x = 16,179.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.