Home / 43,415.34-65,134.65-18,456.54

Finding the Fourth Proportional to 43,415.34, 65,134.65 and 18,456.54

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Solution

The fourth proportional to 43,415.34, 65,134.65 and 18,456.54 is: 27,689.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,415.34 : 65,134.65 = 18,456.54 : x
  2. Step 2: Convert to fraction form
    43,415.34/65,134.65 = 18,456.54/x
  3. Step 3: Cross multiply
    43,415.34x = 65,134.65 × 18,456.54
  4. Step 4: Simplify right side
    43,415.34x = 1,202,160,273.11
  5. Step 5: Solve for x
    x = 1,202,160,273.11/43,415.34
  6. Step 6: Final answer
    x = 27,689.76

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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.