Home / 26,739.72-40,109.58-12,879

Finding the Fourth Proportional to 26,739.72, 40,109.58 and 12,879

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Solution

The fourth proportional to 26,739.72, 40,109.58 and 12,879 is: 19,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,739.72 : 40,109.58 = 12,879 : x
  2. Step 2: Convert to fraction form
    26,739.72/40,109.58 = 12,879/x
  3. Step 3: Cross multiply
    26,739.72x = 40,109.58 × 12,879
  4. Step 4: Simplify right side
    26,739.72x = 516,571,280.82
  5. Step 5: Solve for x
    x = 516,571,280.82/26,739.72
  6. Step 6: Final answer
    x = 19,318.50

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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.