Home / 15,790.33-21,790.41-8,716.81

Finding the Fourth Proportional to 15,790.33, 21,790.41 and 8,716.81

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Solution

The fourth proportional to 15,790.33, 21,790.41 and 8,716.81 is: 12,029.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.33 : 21,790.41 = 8,716.81 : x
  2. Step 2: Convert to fraction form
    15,790.33/21,790.41 = 8,716.81/x
  3. Step 3: Cross multiply
    15,790.33x = 21,790.41 × 8,716.81
  4. Step 4: Simplify right side
    15,790.33x = 189,942,863.79
  5. Step 5: Solve for x
    x = 189,942,863.79/15,790.33
  6. Step 6: Final answer
    x = 12,029.06

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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.