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Finding the Fourth Proportional to 11,604.79, 17,391.46 and 8,470.09

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Solution

The fourth proportional to 11,604.79, 17,391.46 and 8,470.09 is: 12,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,604.79 : 17,391.46 = 8,470.09 : x
  2. Step 2: Convert to fraction form
    11,604.79/17,391.46 = 8,470.09/x
  3. Step 3: Cross multiply
    11,604.79x = 17,391.46 × 8,470.09
  4. Step 4: Simplify right side
    11,604.79x = 147,307,189.08
  5. Step 5: Solve for x
    x = 147,307,189.08/11,604.79
  6. Step 6: Final answer
    x = 12,693.65

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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.