Home / 12,771.15-19,156.76-3,886.57

Finding the Fourth Proportional to 12,771.15, 19,156.76 and 3,886.57

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Solution

The fourth proportional to 12,771.15, 19,156.76 and 3,886.57 is: 5,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,771.15 : 19,156.76 = 3,886.57 : x
  2. Step 2: Convert to fraction form
    12,771.15/19,156.76 = 3,886.57/x
  3. Step 3: Cross multiply
    12,771.15x = 19,156.76 × 3,886.57
  4. Step 4: Simplify right side
    12,771.15x = 74,454,050.54
  5. Step 5: Solve for x
    x = 74,454,050.54/12,771.15
  6. Step 6: Final answer
    x = 5,829.86

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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.