Home / 28,540.99-39,386.60-15,794.70

Finding the Fourth Proportional to 28,540.99, 39,386.60 and 15,794.70

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Solution

The fourth proportional to 28,540.99, 39,386.60 and 15,794.70 is: 21,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,540.99 : 39,386.60 = 15,794.70 : x
  2. Step 2: Convert to fraction form
    28,540.99/39,386.60 = 15,794.70/x
  3. Step 3: Cross multiply
    28,540.99x = 39,386.60 × 15,794.70
  4. Step 4: Simplify right side
    28,540.99x = 622,099,531.02
  5. Step 5: Solve for x
    x = 622,099,531.02/28,540.99
  6. Step 6: Final answer
    x = 21,796.70

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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.