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Finding the Fourth Proportional to 14,669.67, 21,987.96 and 7,279.41

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Solution

The fourth proportional to 14,669.67, 21,987.96 and 7,279.41 is: 10,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,669.67 : 21,987.96 = 7,279.41 : x
  2. Step 2: Convert to fraction form
    14,669.67/21,987.96 = 7,279.41/x
  3. Step 3: Cross multiply
    14,669.67x = 21,987.96 × 7,279.41
  4. Step 4: Simplify right side
    14,669.67x = 160,059,375.90
  5. Step 5: Solve for x
    x = 160,059,375.90/14,669.67
  6. Step 6: Final answer
    x = 10,910.91

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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.