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Finding the Fourth Proportional to 13,437.70, 18,544.09 and 7,469.92

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Solution

The fourth proportional to 13,437.70, 18,544.09 and 7,469.92 is: 10,308.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.70 : 18,544.09 = 7,469.92 : x
  2. Step 2: Convert to fraction form
    13,437.70/18,544.09 = 7,469.92/x
  3. Step 3: Cross multiply
    13,437.70x = 18,544.09 × 7,469.92
  4. Step 4: Simplify right side
    13,437.70x = 138,522,868.77
  5. Step 5: Solve for x
    x = 138,522,868.77/13,437.70
  6. Step 6: Final answer
    x = 10,308.53

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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.