Home / 13,815.12-20,717.40-4,452.75

Finding the Fourth Proportional to 13,815.12, 20,717.40 and 4,452.75

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Solution

The fourth proportional to 13,815.12, 20,717.40 and 4,452.75 is: 6,677.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.12 : 20,717.40 = 4,452.75 : x
  2. Step 2: Convert to fraction form
    13,815.12/20,717.40 = 4,452.75/x
  3. Step 3: Cross multiply
    13,815.12x = 20,717.40 × 4,452.75
  4. Step 4: Simplify right side
    13,815.12x = 92,249,402.85
  5. Step 5: Solve for x
    x = 92,249,402.85/13,815.12
  6. Step 6: Final answer
    x = 6,677.42

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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.