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Finding the Fourth Proportional to 14,751.88, 20,348.29 and 8,779.09

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Solution

The fourth proportional to 14,751.88, 20,348.29 and 8,779.09 is: 12,109.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,751.88 : 20,348.29 = 8,779.09 : x
  2. Step 2: Convert to fraction form
    14,751.88/20,348.29 = 8,779.09/x
  3. Step 3: Cross multiply
    14,751.88x = 20,348.29 × 8,779.09
  4. Step 4: Simplify right side
    14,751.88x = 178,639,469.26
  5. Step 5: Solve for x
    x = 178,639,469.26/14,751.88
  6. Step 6: Final answer
    x = 12,109.61

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1.5x scale

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.