Home / 26,858.70-40,287.85-7,138.64

Finding the Fourth Proportional to 26,858.70, 40,287.85 and 7,138.64

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Solution

The fourth proportional to 26,858.70, 40,287.85 and 7,138.64 is: 10,707.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,858.70 : 40,287.85 = 7,138.64 : x
  2. Step 2: Convert to fraction form
    26,858.70/40,287.85 = 7,138.64/x
  3. Step 3: Cross multiply
    26,858.70x = 40,287.85 × 7,138.64
  4. Step 4: Simplify right side
    26,858.70x = 287,600,540.40
  5. Step 5: Solve for x
    x = 287,600,540.40/26,858.70
  6. Step 6: Final answer
    x = 10,707.91

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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.