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Finding the Fourth Proportional to 29,310.57, 43,978.14 and 12,662.04

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Solution

The fourth proportional to 29,310.57, 43,978.14 and 12,662.04 is: 18,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,310.57 : 43,978.14 = 12,662.04 : x
  2. Step 2: Convert to fraction form
    29,310.57/43,978.14 = 12,662.04/x
  3. Step 3: Cross multiply
    29,310.57x = 43,978.14 × 12,662.04
  4. Step 4: Simplify right side
    29,310.57x = 556,852,967.81
  5. Step 5: Solve for x
    x = 556,852,967.81/29,310.57
  6. Step 6: Final answer
    x = 18,998.37

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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.