Home / 13,778.87-19,006.94-8,734.55

Finding the Fourth Proportional to 13,778.87, 19,006.94 and 8,734.55

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Solution

The fourth proportional to 13,778.87, 19,006.94 and 8,734.55 is: 12,048.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,778.87 : 19,006.94 = 8,734.55 : x
  2. Step 2: Convert to fraction form
    13,778.87/19,006.94 = 8,734.55/x
  3. Step 3: Cross multiply
    13,778.87x = 19,006.94 × 8,734.55
  4. Step 4: Simplify right side
    13,778.87x = 166,017,024.10
  5. Step 5: Solve for x
    x = 166,017,024.10/13,778.87
  6. Step 6: Final answer
    x = 12,048.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.