Home / 13,788.45-20,675.52-6,765.39

Finding the Fourth Proportional to 13,788.45, 20,675.52 and 6,765.39

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Solution

The fourth proportional to 13,788.45, 20,675.52 and 6,765.39 is: 10,144.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.45 : 20,675.52 = 6,765.39 : x
  2. Step 2: Convert to fraction form
    13,788.45/20,675.52 = 6,765.39/x
  3. Step 3: Cross multiply
    13,788.45x = 20,675.52 × 6,765.39
  4. Step 4: Simplify right side
    13,788.45x = 139,877,870.74
  5. Step 5: Solve for x
    x = 139,877,870.74/13,788.45
  6. Step 6: Final answer
    x = 10,144.57

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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.