Home / 15,786.94-21,766.28-10,112.36

Finding the Fourth Proportional to 15,786.94, 21,766.28 and 10,112.36

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Solution

The fourth proportional to 15,786.94, 21,766.28 and 10,112.36 is: 13,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,786.94 : 21,766.28 = 10,112.36 : x
  2. Step 2: Convert to fraction form
    15,786.94/21,766.28 = 10,112.36/x
  3. Step 3: Cross multiply
    15,786.94x = 21,766.28 × 10,112.36
  4. Step 4: Simplify right side
    15,786.94x = 220,108,299.83
  5. Step 5: Solve for x
    x = 220,108,299.83/15,786.94
  6. Step 6: Final answer
    x = 13,942.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.