Home / 13,930.55-20,895.75-3,400.63

Finding the Fourth Proportional to 13,930.55, 20,895.75 and 3,400.63

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Solution

The fourth proportional to 13,930.55, 20,895.75 and 3,400.63 is: 5,100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.55 : 20,895.75 = 3,400.63 : x
  2. Step 2: Convert to fraction form
    13,930.55/20,895.75 = 3,400.63/x
  3. Step 3: Cross multiply
    13,930.55x = 20,895.75 × 3,400.63
  4. Step 4: Simplify right side
    13,930.55x = 71,058,633.72
  5. Step 5: Solve for x
    x = 71,058,633.72/13,930.55
  6. Step 6: Final answer
    x = 5,100.92

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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.