Home / 20,995.33-28,972.96-11,435.00

Finding the Fourth Proportional to 20,995.33, 28,972.96 and 11,435.00

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Solution

The fourth proportional to 20,995.33, 28,972.96 and 11,435.00 is: 15,779.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,995.33 : 28,972.96 = 11,435.00 : x
  2. Step 2: Convert to fraction form
    20,995.33/28,972.96 = 11,435.00/x
  3. Step 3: Cross multiply
    20,995.33x = 28,972.96 × 11,435.00
  4. Step 4: Simplify right side
    20,995.33x = 331,305,595.56
  5. Step 5: Solve for x
    x = 331,305,595.56/20,995.33
  6. Step 6: Final answer
    x = 15,779.97

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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.