Home / 29,300.85-40,435.16-15,872.09

Finding the Fourth Proportional to 29,300.85, 40,435.16 and 15,872.09

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Solution

The fourth proportional to 29,300.85, 40,435.16 and 15,872.09 is: 21,903.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,300.85 : 40,435.16 = 15,872.09 : x
  2. Step 2: Convert to fraction form
    29,300.85/40,435.16 = 15,872.09/x
  3. Step 3: Cross multiply
    29,300.85x = 40,435.16 × 15,872.09
  4. Step 4: Simplify right side
    29,300.85x = 641,790,217.15
  5. Step 5: Solve for x
    x = 641,790,217.15/29,300.85
  6. Step 6: Final answer
    x = 21,903.47

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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.