Home / 11,105.58-15,325.89-6,628.47

Finding the Fourth Proportional to 11,105.58, 15,325.89 and 6,628.47

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Solution

The fourth proportional to 11,105.58, 15,325.89 and 6,628.47 is: 9,147.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.58 : 15,325.89 = 6,628.47 : x
  2. Step 2: Convert to fraction form
    11,105.58/15,325.89 = 6,628.47/x
  3. Step 3: Cross multiply
    11,105.58x = 15,325.89 × 6,628.47
  4. Step 4: Simplify right side
    11,105.58x = 101,587,202.09
  5. Step 5: Solve for x
    x = 101,587,202.09/11,105.58
  6. Step 6: Final answer
    x = 9,147.40

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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.