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Finding the Fourth Proportional to 43,397.59, 65,108.87 and 13,819.99

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Solution

The fourth proportional to 43,397.59, 65,108.87 and 13,819.99 is: 20,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,397.59 : 65,108.87 = 13,819.99 : x
  2. Step 2: Convert to fraction form
    43,397.59/65,108.87 = 13,819.99/x
  3. Step 3: Cross multiply
    43,397.59x = 65,108.87 × 13,819.99
  4. Step 4: Simplify right side
    43,397.59x = 899,803,932.31
  5. Step 5: Solve for x
    x = 899,803,932.31/43,397.59
  6. Step 6: Final answer
    x = 20,733.96

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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.