Home / 18,791.37-25,920.36-12,085.74

Finding the Fourth Proportional to 18,791.37, 25,920.36 and 12,085.74

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Solution

The fourth proportional to 18,791.37, 25,920.36 and 12,085.74 is: 16,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.37 : 25,920.36 = 12,085.74 : x
  2. Step 2: Convert to fraction form
    18,791.37/25,920.36 = 12,085.74/x
  3. Step 3: Cross multiply
    18,791.37x = 25,920.36 × 12,085.74
  4. Step 4: Simplify right side
    18,791.37x = 313,266,731.67
  5. Step 5: Solve for x
    x = 313,266,731.67/18,791.37
  6. Step 6: Final answer
    x = 16,670.78

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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.