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Finding the Fourth Proportional to 8,828.09, 13,245.36 and 8,306.45

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Solution

The fourth proportional to 8,828.09, 13,245.36 and 8,306.45 is: 12,462.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,828.09 : 13,245.36 = 8,306.45 : x
  2. Step 2: Convert to fraction form
    8,828.09/13,245.36 = 8,306.45/x
  3. Step 3: Cross multiply
    8,828.09x = 13,245.36 × 8,306.45
  4. Step 4: Simplify right side
    8,828.09x = 110,021,854.35
  5. Step 5: Solve for x
    x = 110,021,854.35/8,828.09
  6. Step 6: Final answer
    x = 12,462.71

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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.