Home / 11,201.62-15,455.52-9,415.84

Finding the Fourth Proportional to 11,201.62, 15,455.52 and 9,415.84

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Solution

The fourth proportional to 11,201.62, 15,455.52 and 9,415.84 is: 12,991.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,201.62 : 15,455.52 = 9,415.84 : x
  2. Step 2: Convert to fraction form
    11,201.62/15,455.52 = 9,415.84/x
  3. Step 3: Cross multiply
    11,201.62x = 15,455.52 × 9,415.84
  4. Step 4: Simplify right side
    11,201.62x = 145,526,703.44
  5. Step 5: Solve for x
    x = 145,526,703.44/11,201.62
  6. Step 6: Final answer
    x = 12,991.58

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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.