Home / 12,256.99-18,379.31-5,687.79

Finding the Fourth Proportional to 12,256.99, 18,379.31 and 5,687.79

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Solution

The fourth proportional to 12,256.99, 18,379.31 and 5,687.79 is: 8,528.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256.99 : 18,379.31 = 5,687.79 : x
  2. Step 2: Convert to fraction form
    12,256.99/18,379.31 = 5,687.79/x
  3. Step 3: Cross multiply
    12,256.99x = 18,379.31 × 5,687.79
  4. Step 4: Simplify right side
    12,256.99x = 104,537,558.26
  5. Step 5: Solve for x
    x = 104,537,558.26/12,256.99
  6. Step 6: Final answer
    x = 8,528.81

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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.