Home / 11,090.80-15,299.22-7,107.40

Finding the Fourth Proportional to 11,090.80, 15,299.22 and 7,107.40

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Solution

The fourth proportional to 11,090.80, 15,299.22 and 7,107.40 is: 9,804.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,090.80 : 15,299.22 = 7,107.40 : x
  2. Step 2: Convert to fraction form
    11,090.80/15,299.22 = 7,107.40/x
  3. Step 3: Cross multiply
    11,090.80x = 15,299.22 × 7,107.40
  4. Step 4: Simplify right side
    11,090.80x = 108,737,676.23
  5. Step 5: Solve for x
    x = 108,737,676.23/11,090.80
  6. Step 6: Final answer
    x = 9,804.31

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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.