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Finding the Fourth Proportional to 12,294.55, 16,953.09 and 8,308.75

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Solution

The fourth proportional to 12,294.55, 16,953.09 and 8,308.75 is: 11,457.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,294.55 : 16,953.09 = 8,308.75 : x
  2. Step 2: Convert to fraction form
    12,294.55/16,953.09 = 8,308.75/x
  3. Step 3: Cross multiply
    12,294.55x = 16,953.09 × 8,308.75
  4. Step 4: Simplify right side
    12,294.55x = 140,858,986.54
  5. Step 5: Solve for x
    x = 140,858,986.54/12,294.55
  6. Step 6: Final answer
    x = 11,457.03

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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.