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Finding the Fourth Proportional to 19,889.93, 29,848.31 and 8,202.89

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Solution

The fourth proportional to 19,889.93, 29,848.31 and 8,202.89 is: 12,309.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,889.93 : 29,848.31 = 8,202.89 : x
  2. Step 2: Convert to fraction form
    19,889.93/29,848.31 = 8,202.89/x
  3. Step 3: Cross multiply
    19,889.93x = 29,848.31 × 8,202.89
  4. Step 4: Simplify right side
    19,889.93x = 244,842,213.36
  5. Step 5: Solve for x
    x = 244,842,213.36/19,889.93
  6. Step 6: Final answer
    x = 12,309.86

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1.5x scale

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.