Home / 19,815.88-29,725.44-6,664.72

Finding the Fourth Proportional to 19,815.88, 29,725.44 and 6,664.72

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Solution

The fourth proportional to 19,815.88, 29,725.44 and 6,664.72 is: 9,997.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815.88 : 29,725.44 = 6,664.72 : x
  2. Step 2: Convert to fraction form
    19,815.88/29,725.44 = 6,664.72/x
  3. Step 3: Cross multiply
    19,815.88x = 29,725.44 × 6,664.72
  4. Step 4: Simplify right side
    19,815.88x = 198,111,734.48
  5. Step 5: Solve for x
    x = 198,111,734.48/19,815.88
  6. Step 6: Final answer
    x = 9,997.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.