Home / 13,872.11-20,805.58-4,509.35

Finding the Fourth Proportional to 13,872.11, 20,805.58 and 4,509.35

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Solution

The fourth proportional to 13,872.11, 20,805.58 and 4,509.35 is: 6,763.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.11 : 20,805.58 = 4,509.35 : x
  2. Step 2: Convert to fraction form
    13,872.11/20,805.58 = 4,509.35/x
  3. Step 3: Cross multiply
    13,872.11x = 20,805.58 × 4,509.35
  4. Step 4: Simplify right side
    13,872.11x = 93,819,575.97
  5. Step 5: Solve for x
    x = 93,819,575.97/13,872.11
  6. Step 6: Final answer
    x = 6,763.18

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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.