Home / 28,481.48-39,315.66-18,789.38

Finding the Fourth Proportional to 28,481.48, 39,315.66 and 18,789.38

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Solution

The fourth proportional to 28,481.48, 39,315.66 and 18,789.38 is: 25,936.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,481.48 : 39,315.66 = 18,789.38 : x
  2. Step 2: Convert to fraction form
    28,481.48/39,315.66 = 18,789.38/x
  3. Step 3: Cross multiply
    28,481.48x = 39,315.66 × 18,789.38
  4. Step 4: Simplify right side
    28,481.48x = 738,716,875.69
  5. Step 5: Solve for x
    x = 738,716,875.69/28,481.48
  6. Step 6: Final answer
    x = 25,936.74

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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.