Home / 19,918.63-29,876.73-8,231.55

Finding the Fourth Proportional to 19,918.63, 29,876.73 and 8,231.55

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Solution

The fourth proportional to 19,918.63, 29,876.73 and 8,231.55 is: 12,346.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.63 : 29,876.73 = 8,231.55 : x
  2. Step 2: Convert to fraction form
    19,918.63/29,876.73 = 8,231.55/x
  3. Step 3: Cross multiply
    19,918.63x = 29,876.73 × 8,231.55
  4. Step 4: Simplify right side
    19,918.63x = 245,931,796.83
  5. Step 5: Solve for x
    x = 245,931,796.83/19,918.63
  6. Step 6: Final answer
    x = 12,346.82

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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.