Home / 13,679.25-20,504.85-10,385.37

Finding the Fourth Proportional to 13,679.25, 20,504.85 and 10,385.37

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Solution

The fourth proportional to 13,679.25, 20,504.85 and 10,385.37 is: 15,567.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.25 : 20,504.85 = 10,385.37 : x
  2. Step 2: Convert to fraction form
    13,679.25/20,504.85 = 10,385.37/x
  3. Step 3: Cross multiply
    13,679.25x = 20,504.85 × 10,385.37
  4. Step 4: Simplify right side
    13,679.25x = 212,950,454.04
  5. Step 5: Solve for x
    x = 212,950,454.04/13,679.25
  6. Step 6: Final answer
    x = 15,567.41

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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.