Home / 13,422.12-18,522.54-7,453.80

Finding the Fourth Proportional to 13,422.12, 18,522.54 and 7,453.80

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Solution

The fourth proportional to 13,422.12, 18,522.54 and 7,453.80 is: 10,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.12 : 18,522.54 = 7,453.80 : x
  2. Step 2: Convert to fraction form
    13,422.12/18,522.54 = 7,453.80/x
  3. Step 3: Cross multiply
    13,422.12x = 18,522.54 × 7,453.80
  4. Step 4: Simplify right side
    13,422.12x = 138,063,308.65
  5. Step 5: Solve for x
    x = 138,063,308.65/13,422.12
  6. Step 6: Final answer
    x = 10,286.25

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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.