Home / 14,293.98-19,728-8,629.56

Finding the Fourth Proportional to 14,293.98, 19,728 and 8,629.56

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Solution

The fourth proportional to 14,293.98, 19,728 and 8,629.56 is: 11,910.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,293.98 : 19,728 = 8,629.56 : x
  2. Step 2: Convert to fraction form
    14,293.98/19,728 = 8,629.56/x
  3. Step 3: Cross multiply
    14,293.98x = 19,728 × 8,629.56
  4. Step 4: Simplify right side
    14,293.98x = 170,243,959.68
  5. Step 5: Solve for x
    x = 170,243,959.68/14,293.98
  6. Step 6: Final answer
    x = 11,910.19

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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.