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Finding the Fourth Proportional to 13,437.88, 18,544.91 and 7,469.65

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Solution

The fourth proportional to 13,437.88, 18,544.91 and 7,469.65 is: 10,308.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.88 : 18,544.91 = 7,469.65 : x
  2. Step 2: Convert to fraction form
    13,437.88/18,544.91 = 7,469.65/x
  3. Step 3: Cross multiply
    13,437.88x = 18,544.91 × 7,469.65
  4. Step 4: Simplify right side
    13,437.88x = 138,524,014.83
  5. Step 5: Solve for x
    x = 138,524,014.83/13,437.88
  6. Step 6: Final answer
    x = 10,308.47

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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.