Home / 13,954.37-20,909.67-11,865.78

Finding the Fourth Proportional to 13,954.37, 20,909.67 and 11,865.78

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Solution

The fourth proportional to 13,954.37, 20,909.67 and 11,865.78 is: 17,780.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,954.37 : 20,909.67 = 11,865.78 : x
  2. Step 2: Convert to fraction form
    13,954.37/20,909.67 = 11,865.78/x
  3. Step 3: Cross multiply
    13,954.37x = 20,909.67 × 11,865.78
  4. Step 4: Simplify right side
    13,954.37x = 248,109,544.09
  5. Step 5: Solve for x
    x = 248,109,544.09/13,954.37
  6. Step 6: Final answer
    x = 17,780.07

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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.