Home / 12,880.15-19,314.65-4,447.54

Finding the Fourth Proportional to 12,880.15, 19,314.65 and 4,447.54

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Solution

The fourth proportional to 12,880.15, 19,314.65 and 4,447.54 is: 6,669.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.15 : 19,314.65 = 4,447.54 : x
  2. Step 2: Convert to fraction form
    12,880.15/19,314.65 = 4,447.54/x
  3. Step 3: Cross multiply
    12,880.15x = 19,314.65 × 4,447.54
  4. Step 4: Simplify right side
    12,880.15x = 85,902,737.87
  5. Step 5: Solve for x
    x = 85,902,737.87/12,880.15
  6. Step 6: Final answer
    x = 6,669.39

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1.5x scale

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.