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Finding the Fourth Proportional to 11,449.70, 15,809.72 and 7,625.07

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Solution

The fourth proportional to 11,449.70, 15,809.72 and 7,625.07 is: 10,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,449.70 : 15,809.72 = 7,625.07 : x
  2. Step 2: Convert to fraction form
    11,449.70/15,809.72 = 7,625.07/x
  3. Step 3: Cross multiply
    11,449.70x = 15,809.72 × 7,625.07
  4. Step 4: Simplify right side
    11,449.70x = 120,550,183.56
  5. Step 5: Solve for x
    x = 120,550,183.56/11,449.70
  6. Step 6: Final answer
    x = 10,528.68

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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.