Home / 12,763.78-19,141.40-5,366.86

Finding the Fourth Proportional to 12,763.78, 19,141.40 and 5,366.86

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Solution

The fourth proportional to 12,763.78, 19,141.40 and 5,366.86 is: 8,048.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,763.78 : 19,141.40 = 5,366.86 : x
  2. Step 2: Convert to fraction form
    12,763.78/19,141.40 = 5,366.86/x
  3. Step 3: Cross multiply
    12,763.78x = 19,141.40 × 5,366.86
  4. Step 4: Simplify right side
    12,763.78x = 102,729,179.57
  5. Step 5: Solve for x
    x = 102,729,179.57/12,763.78
  6. Step 6: Final answer
    x = 8,048.49

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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.