Home / 13,869.80-20,811.26-6,949.16

Finding the Fourth Proportional to 13,869.80, 20,811.26 and 6,949.16

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Solution

The fourth proportional to 13,869.80, 20,811.26 and 6,949.16 is: 10,427.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.80 : 20,811.26 = 6,949.16 : x
  2. Step 2: Convert to fraction form
    13,869.80/20,811.26 = 6,949.16/x
  3. Step 3: Cross multiply
    13,869.80x = 20,811.26 × 6,949.16
  4. Step 4: Simplify right side
    13,869.80x = 144,620,775.54
  5. Step 5: Solve for x
    x = 144,620,775.54/13,869.80
  6. Step 6: Final answer
    x = 10,427.03

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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.