Home / 13,765.81-20,648.72-3,377.56

Finding the Fourth Proportional to 13,765.81, 20,648.72 and 3,377.56

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Solution

The fourth proportional to 13,765.81, 20,648.72 and 3,377.56 is: 5,066.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.81 : 20,648.72 = 3,377.56 : x
  2. Step 2: Convert to fraction form
    13,765.81/20,648.72 = 3,377.56/x
  3. Step 3: Cross multiply
    13,765.81x = 20,648.72 × 3,377.56
  4. Step 4: Simplify right side
    13,765.81x = 69,742,290.72
  5. Step 5: Solve for x
    x = 69,742,290.72/13,765.81
  6. Step 6: Final answer
    x = 5,066.34

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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.