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Finding the Fourth Proportional to 30,498.51, 45,721.44 and 11,791.65

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Solution

The fourth proportional to 30,498.51, 45,721.44 and 11,791.65 is: 17,677.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,498.51 : 45,721.44 = 11,791.65 : x
  2. Step 2: Convert to fraction form
    30,498.51/45,721.44 = 11,791.65/x
  3. Step 3: Cross multiply
    30,498.51x = 45,721.44 × 11,791.65
  4. Step 4: Simplify right side
    30,498.51x = 539,131,217.98
  5. Step 5: Solve for x
    x = 539,131,217.98/30,498.51
  6. Step 6: Final answer
    x = 17,677.30

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1.5x scale

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.