Home / 11,028.05-15,219.23-6,779.28

Finding the Fourth Proportional to 11,028.05, 15,219.23 and 6,779.28

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Solution

The fourth proportional to 11,028.05, 15,219.23 and 6,779.28 is: 9,355.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,028.05 : 15,219.23 = 6,779.28 : x
  2. Step 2: Convert to fraction form
    11,028.05/15,219.23 = 6,779.28/x
  3. Step 3: Cross multiply
    11,028.05x = 15,219.23 × 6,779.28
  4. Step 4: Simplify right side
    11,028.05x = 103,175,387.66
  5. Step 5: Solve for x
    x = 103,175,387.66/11,028.05
  6. Step 6: Final answer
    x = 9,355.73

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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.