Home / 13,427.80-20,120.10-6,844.12

Finding the Fourth Proportional to 13,427.80, 20,120.10 and 6,844.12

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Solution

The fourth proportional to 13,427.80, 20,120.10 and 6,844.12 is: 10,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.80 : 20,120.10 = 6,844.12 : x
  2. Step 2: Convert to fraction form
    13,427.80/20,120.10 = 6,844.12/x
  3. Step 3: Cross multiply
    13,427.80x = 20,120.10 × 6,844.12
  4. Step 4: Simplify right side
    13,427.80x = 137,704,378.81
  5. Step 5: Solve for x
    x = 137,704,378.81/13,427.80
  6. Step 6: Final answer
    x = 10,255.17

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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.