Home / 13,991.13-20,884.26-12,330.36

Finding the Fourth Proportional to 13,991.13, 20,884.26 and 12,330.36

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Solution

The fourth proportional to 13,991.13, 20,884.26 and 12,330.36 is: 18,405.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,991.13 : 20,884.26 = 12,330.36 : x
  2. Step 2: Convert to fraction form
    13,991.13/20,884.26 = 12,330.36/x
  3. Step 3: Cross multiply
    13,991.13x = 20,884.26 × 12,330.36
  4. Step 4: Simplify right side
    13,991.13x = 257,510,490.37
  5. Step 5: Solve for x
    x = 257,510,490.37/13,991.13
  6. Step 6: Final answer
    x = 18,405.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.