Home / 19,872.32-29,822.14-8,185.54

Finding the Fourth Proportional to 19,872.32, 29,822.14 and 8,185.54

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Solution

The fourth proportional to 19,872.32, 29,822.14 and 8,185.54 is: 12,283.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.32 : 29,822.14 = 8,185.54 : x
  2. Step 2: Convert to fraction form
    19,872.32/29,822.14 = 8,185.54/x
  3. Step 3: Cross multiply
    19,872.32x = 29,822.14 × 8,185.54
  4. Step 4: Simplify right side
    19,872.32x = 244,110,319.86
  5. Step 5: Solve for x
    x = 244,110,319.86/19,872.32
  6. Step 6: Final answer
    x = 12,283.94

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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.