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Finding the Fourth Proportional to 43,690.53, 65,535.97 and 13,295.96

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Solution

The fourth proportional to 43,690.53, 65,535.97 and 13,295.96 is: 19,943.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,690.53 : 65,535.97 = 13,295.96 : x
  2. Step 2: Convert to fraction form
    43,690.53/65,535.97 = 13,295.96/x
  3. Step 3: Cross multiply
    43,690.53x = 65,535.97 × 13,295.96
  4. Step 4: Simplify right side
    43,690.53x = 871,363,635.68
  5. Step 5: Solve for x
    x = 871,363,635.68/43,690.53
  6. Step 6: Final answer
    x = 19,943.99

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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.