Home / 29,042.10-43,579.35-12,399.30

Finding the Fourth Proportional to 29,042.10, 43,579.35 and 12,399.30

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Solution

The fourth proportional to 29,042.10, 43,579.35 and 12,399.30 is: 18,605.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,042.10 : 43,579.35 = 12,399.30 : x
  2. Step 2: Convert to fraction form
    29,042.10/43,579.35 = 12,399.30/x
  3. Step 3: Cross multiply
    29,042.10x = 43,579.35 × 12,399.30
  4. Step 4: Simplify right side
    29,042.10x = 540,353,434.46
  5. Step 5: Solve for x
    x = 540,353,434.46/29,042.10
  6. Step 6: Final answer
    x = 18,605.87

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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.