Home / 19,871.52-29,810.64-8,181.60

Finding the Fourth Proportional to 19,871.52, 29,810.64 and 8,181.60

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Solution

The fourth proportional to 19,871.52, 29,810.64 and 8,181.60 is: 12,273.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.52 : 29,810.64 = 8,181.60 : x
  2. Step 2: Convert to fraction form
    19,871.52/29,810.64 = 8,181.60/x
  3. Step 3: Cross multiply
    19,871.52x = 29,810.64 × 8,181.60
  4. Step 4: Simplify right side
    19,871.52x = 243,898,732.22
  5. Step 5: Solve for x
    x = 243,898,732.22/19,871.52
  6. Step 6: Final answer
    x = 12,273.78

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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.