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Finding the Fourth Proportional to 30,008.50, 44,982.03 and 12,488.50

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Solution

The fourth proportional to 30,008.50, 44,982.03 and 12,488.50 is: 18,719.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,008.50 : 44,982.03 = 12,488.50 : x
  2. Step 2: Convert to fraction form
    30,008.50/44,982.03 = 12,488.50/x
  3. Step 3: Cross multiply
    30,008.50x = 44,982.03 × 12,488.50
  4. Step 4: Simplify right side
    30,008.50x = 561,758,081.66
  5. Step 5: Solve for x
    x = 561,758,081.66/30,008.50
  6. Step 6: Final answer
    x = 18,719.97

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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.