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Finding the Fourth Proportional to 30,495.51, 45,716.94 and 11,788.65

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Solution

The fourth proportional to 30,495.51, 45,716.94 and 11,788.65 is: 17,672.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,495.51 : 45,716.94 = 11,788.65 : x
  2. Step 2: Convert to fraction form
    30,495.51/45,716.94 = 11,788.65/x
  3. Step 3: Cross multiply
    30,495.51x = 45,716.94 × 11,788.65
  4. Step 4: Simplify right side
    30,495.51x = 538,941,004.73
  5. Step 5: Solve for x
    x = 538,941,004.73/30,495.51
  6. Step 6: Final answer
    x = 17,672.80

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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.