Home / 11,175.05-15,421.49-6,698.79

Finding the Fourth Proportional to 11,175.05, 15,421.49 and 6,698.79

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Solution

The fourth proportional to 11,175.05, 15,421.49 and 6,698.79 is: 9,244.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,175.05 : 15,421.49 = 6,698.79 : x
  2. Step 2: Convert to fraction form
    11,175.05/15,421.49 = 6,698.79/x
  3. Step 3: Cross multiply
    11,175.05x = 15,421.49 × 6,698.79
  4. Step 4: Simplify right side
    11,175.05x = 103,305,289.50
  5. Step 5: Solve for x
    x = 103,305,289.50/11,175.05
  6. Step 6: Final answer
    x = 9,244.28

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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.