Home / 18,775.89-28,169.73-11,288.07

Finding the Fourth Proportional to 18,775.89, 28,169.73 and 11,288.07

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Solution

The fourth proportional to 18,775.89, 28,169.73 and 11,288.07 is: 16,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.89 : 28,169.73 = 11,288.07 : x
  2. Step 2: Convert to fraction form
    18,775.89/28,169.73 = 11,288.07/x
  3. Step 3: Cross multiply
    18,775.89x = 28,169.73 × 11,288.07
  4. Step 4: Simplify right side
    18,775.89x = 317,981,884.12
  5. Step 5: Solve for x
    x = 317,981,884.12/18,775.89
  6. Step 6: Final answer
    x = 16,935.65

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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.