Home / 13,858.43-20,790.68-7,929.23

Finding the Fourth Proportional to 13,858.43, 20,790.68 and 7,929.23

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Solution

The fourth proportional to 13,858.43, 20,790.68 and 7,929.23 is: 11,895.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.43 : 20,790.68 = 7,929.23 : x
  2. Step 2: Convert to fraction form
    13,858.43/20,790.68 = 7,929.23/x
  3. Step 3: Cross multiply
    13,858.43x = 20,790.68 × 7,929.23
  4. Step 4: Simplify right side
    13,858.43x = 164,853,939.98
  5. Step 5: Solve for x
    x = 164,853,939.98/13,858.43
  6. Step 6: Final answer
    x = 11,895.58

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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.