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Finding the Fourth Proportional to 32,919, 45,428.31 and 18,015

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Solution

The fourth proportional to 32,919, 45,428.31 and 18,015 is: 24,860.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,919 : 45,428.31 = 18,015 : x
  2. Step 2: Convert to fraction form
    32,919/45,428.31 = 18,015/x
  3. Step 3: Cross multiply
    32,919x = 45,428.31 × 18,015
  4. Step 4: Simplify right side
    32,919x = 818,391,004.65
  5. Step 5: Solve for x
    x = 818,391,004.65/32,919
  6. Step 6: Final answer
    x = 24,860.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.