Home / 21,134.43-29,165.47-12,181.87

Finding the Fourth Proportional to 21,134.43, 29,165.47 and 12,181.87

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Solution

The fourth proportional to 21,134.43, 29,165.47 and 12,181.87 is: 16,810.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.43 : 29,165.47 = 12,181.87 : x
  2. Step 2: Convert to fraction form
    21,134.43/29,165.47 = 12,181.87/x
  3. Step 3: Cross multiply
    21,134.43x = 29,165.47 × 12,181.87
  4. Step 4: Simplify right side
    21,134.43x = 355,289,970.03
  5. Step 5: Solve for x
    x = 355,289,970.03/21,134.43
  6. Step 6: Final answer
    x = 16,810.96

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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.