Home / 11,721.54-16,176.83-7,005.72

Finding the Fourth Proportional to 11,721.54, 16,176.83 and 7,005.72

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Solution

The fourth proportional to 11,721.54, 16,176.83 and 7,005.72 is: 9,668.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.54 : 16,176.83 = 7,005.72 : x
  2. Step 2: Convert to fraction form
    11,721.54/16,176.83 = 7,005.72/x
  3. Step 3: Cross multiply
    11,721.54x = 16,176.83 × 7,005.72
  4. Step 4: Simplify right side
    11,721.54x = 113,330,306.44
  5. Step 5: Solve for x
    x = 113,330,306.44/11,721.54
  6. Step 6: Final answer
    x = 9,668.55

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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.