Home / 12,786.66-19,172.70-6,856.25

Finding the Fourth Proportional to 12,786.66, 19,172.70 and 6,856.25

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Solution

The fourth proportional to 12,786.66, 19,172.70 and 6,856.25 is: 10,280.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,786.66 : 19,172.70 = 6,856.25 : x
  2. Step 2: Convert to fraction form
    12,786.66/19,172.70 = 6,856.25/x
  3. Step 3: Cross multiply
    12,786.66x = 19,172.70 × 6,856.25
  4. Step 4: Simplify right side
    12,786.66x = 131,452,728.51
  5. Step 5: Solve for x
    x = 131,452,728.51/12,786.66
  6. Step 6: Final answer
    x = 10,280.46

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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.