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Finding the Fourth Proportional to 11,245.40, 15,520.02 and 6,529.68

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Solution

The fourth proportional to 11,245.40, 15,520.02 and 6,529.68 is: 9,011.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,245.40 : 15,520.02 = 6,529.68 : x
  2. Step 2: Convert to fraction form
    11,245.40/15,520.02 = 6,529.68/x
  3. Step 3: Cross multiply
    11,245.40x = 15,520.02 × 6,529.68
  4. Step 4: Simplify right side
    11,245.40x = 101,340,747.87
  5. Step 5: Solve for x
    x = 101,340,747.87/11,245.40
  6. Step 6: Final answer
    x = 9,011.75

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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.