Home / 13,930.30-20,895-4,069.72

Finding the Fourth Proportional to 13,930.30, 20,895 and 4,069.72

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Solution

The fourth proportional to 13,930.30, 20,895 and 4,069.72 is: 6,104.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,930.30 : 20,895 = 4,069.72 : x
  2. Step 2: Convert to fraction form
    13,930.30/20,895 = 4,069.72/x
  3. Step 3: Cross multiply
    13,930.30x = 20,895 × 4,069.72
  4. Step 4: Simplify right side
    13,930.30x = 85,036,799.40
  5. Step 5: Solve for x
    x = 85,036,799.40/13,930.30
  6. Step 6: Final answer
    x = 6,104.45

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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.