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Finding the Fourth Proportional to 43,697.13, 65,491.02 and 18,708.09

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Solution

The fourth proportional to 43,697.13, 65,491.02 and 18,708.09 is: 28,038.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,697.13 : 65,491.02 = 18,708.09 : x
  2. Step 2: Convert to fraction form
    43,697.13/65,491.02 = 18,708.09/x
  3. Step 3: Cross multiply
    43,697.13x = 65,491.02 × 18,708.09
  4. Step 4: Simplify right side
    43,697.13x = 1,225,211,896.35
  5. Step 5: Solve for x
    x = 1,225,211,896.35/43,697.13
  6. Step 6: Final answer
    x = 28,038.73

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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.