Home / 26,986.91-40,480.76-12,185.51

Finding the Fourth Proportional to 26,986.91, 40,480.76 and 12,185.51

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Solution

The fourth proportional to 26,986.91, 40,480.76 and 12,185.51 is: 18,278.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,986.91 : 40,480.76 = 12,185.51 : x
  2. Step 2: Convert to fraction form
    26,986.91/40,480.76 = 12,185.51/x
  3. Step 3: Cross multiply
    26,986.91x = 40,480.76 × 12,185.51
  4. Step 4: Simplify right side
    26,986.91x = 493,278,533.85
  5. Step 5: Solve for x
    x = 493,278,533.85/26,986.91
  6. Step 6: Final answer
    x = 18,278.44

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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.