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Finding the Fourth Proportional to 15,245.94, 21,046.02 and 9,279.48

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Solution

The fourth proportional to 15,245.94, 21,046.02 and 9,279.48 is: 12,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,245.94 : 21,046.02 = 9,279.48 : x
  2. Step 2: Convert to fraction form
    15,245.94/21,046.02 = 9,279.48/x
  3. Step 3: Cross multiply
    15,245.94x = 21,046.02 × 9,279.48
  4. Step 4: Simplify right side
    15,245.94x = 195,296,121.67
  5. Step 5: Solve for x
    x = 195,296,121.67/15,245.94
  6. Step 6: Final answer
    x = 12,809.71

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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.