Home / 20,003.78-27,619.08-12,453.50

Finding the Fourth Proportional to 20,003.78, 27,619.08 and 12,453.50

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Solution

The fourth proportional to 20,003.78, 27,619.08 and 12,453.50 is: 17,194.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.78 : 27,619.08 = 12,453.50 : x
  2. Step 2: Convert to fraction form
    20,003.78/27,619.08 = 12,453.50/x
  3. Step 3: Cross multiply
    20,003.78x = 27,619.08 × 12,453.50
  4. Step 4: Simplify right side
    20,003.78x = 343,954,212.78
  5. Step 5: Solve for x
    x = 343,954,212.78/20,003.78
  6. Step 6: Final answer
    x = 17,194.46

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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.