Home / 12,786.10-19,155.39-6,947.62

Finding the Fourth Proportional to 12,786.10, 19,155.39 and 6,947.62

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Solution

The fourth proportional to 12,786.10, 19,155.39 and 6,947.62 is: 10,408.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.10 : 19,155.39 = 6,947.62 : x
  2. Step 2: Convert to fraction form
    12,786.10/19,155.39 = 6,947.62/x
  3. Step 3: Cross multiply
    12,786.10x = 19,155.39 × 6,947.62
  4. Step 4: Simplify right side
    12,786.10x = 133,084,370.67
  5. Step 5: Solve for x
    x = 133,084,370.67/12,786.10
  6. Step 6: Final answer
    x = 10,408.52

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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.