Home / 11,969.79-16,515.55-6,862.94

Finding the Fourth Proportional to 11,969.79, 16,515.55 and 6,862.94

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Solution

The fourth proportional to 11,969.79, 16,515.55 and 6,862.94 is: 9,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,969.79 : 16,515.55 = 6,862.94 : x
  2. Step 2: Convert to fraction form
    11,969.79/16,515.55 = 6,862.94/x
  3. Step 3: Cross multiply
    11,969.79x = 16,515.55 × 6,862.94
  4. Step 4: Simplify right side
    11,969.79x = 113,345,216.65
  5. Step 5: Solve for x
    x = 113,345,216.65/11,969.79
  6. Step 6: Final answer
    x = 9,469.28

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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.