Home / 13,520.94-20,283.36-4,161.76

Finding the Fourth Proportional to 13,520.94, 20,283.36 and 4,161.76

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Solution

The fourth proportional to 13,520.94, 20,283.36 and 4,161.76 is: 6,243.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.94 : 20,283.36 = 4,161.76 : x
  2. Step 2: Convert to fraction form
    13,520.94/20,283.36 = 4,161.76/x
  3. Step 3: Cross multiply
    13,520.94x = 20,283.36 × 4,161.76
  4. Step 4: Simplify right side
    13,520.94x = 84,414,476.31
  5. Step 5: Solve for x
    x = 84,414,476.31/13,520.94
  6. Step 6: Final answer
    x = 6,243.24

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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.