Home / 13,779.75-20,672.87-4,545.75

Finding the Fourth Proportional to 13,779.75, 20,672.87 and 4,545.75

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Solution

The fourth proportional to 13,779.75, 20,672.87 and 4,545.75 is: 6,819.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.75 : 20,672.87 = 4,545.75 : x
  2. Step 2: Convert to fraction form
    13,779.75/20,672.87 = 4,545.75/x
  3. Step 3: Cross multiply
    13,779.75x = 20,672.87 × 4,545.75
  4. Step 4: Simplify right side
    13,779.75x = 93,973,698.80
  5. Step 5: Solve for x
    x = 93,973,698.80/13,779.75
  6. Step 6: Final answer
    x = 6,819.70

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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.