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Finding the Fourth Proportional to 43,317, 65,001.42 and 18,693

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Solution

The fourth proportional to 43,317, 65,001.42 and 18,693 is: 28,050.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,317 : 65,001.42 = 18,693 : x
  2. Step 2: Convert to fraction form
    43,317/65,001.42 = 18,693/x
  3. Step 3: Cross multiply
    43,317x = 65,001.42 × 18,693
  4. Step 4: Simplify right side
    43,317x = 1,215,071,544.06
  5. Step 5: Solve for x
    x = 1,215,071,544.06/43,317
  6. Step 6: Final answer
    x = 28,050.69

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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.