Home / 28,406.64-39,202.89-15,659.82

Finding the Fourth Proportional to 28,406.64, 39,202.89 and 15,659.82

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Solution

The fourth proportional to 28,406.64, 39,202.89 and 15,659.82 is: 21,611.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,406.64 : 39,202.89 = 15,659.82 : x
  2. Step 2: Convert to fraction form
    28,406.64/39,202.89 = 15,659.82/x
  3. Step 3: Cross multiply
    28,406.64x = 39,202.89 × 15,659.82
  4. Step 4: Simplify right side
    28,406.64x = 613,910,200.88
  5. Step 5: Solve for x
    x = 613,910,200.88/28,406.64
  6. Step 6: Final answer
    x = 21,611.50

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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.