Home / 13,984.73-20,977.10-13,129.37

Finding the Fourth Proportional to 13,984.73, 20,977.10 and 13,129.37

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Solution

The fourth proportional to 13,984.73, 20,977.10 and 13,129.37 is: 19,694.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,984.73 : 20,977.10 = 13,129.37 : x
  2. Step 2: Convert to fraction form
    13,984.73/20,977.10 = 13,129.37/x
  3. Step 3: Cross multiply
    13,984.73x = 20,977.10 × 13,129.37
  4. Step 4: Simplify right side
    13,984.73x = 275,416,143.46
  5. Step 5: Solve for x
    x = 275,416,143.46/13,984.73
  6. Step 6: Final answer
    x = 19,694.06

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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.