Home / 11,378.88-17,055.84-7,425.12

Finding the Fourth Proportional to 11,378.88, 17,055.84 and 7,425.12

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Solution

The fourth proportional to 11,378.88, 17,055.84 and 7,425.12 is: 11,129.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.88 : 17,055.84 = 7,425.12 : x
  2. Step 2: Convert to fraction form
    11,378.88/17,055.84 = 7,425.12/x
  3. Step 3: Cross multiply
    11,378.88x = 17,055.84 × 7,425.12
  4. Step 4: Simplify right side
    11,378.88x = 126,641,658.70
  5. Step 5: Solve for x
    x = 126,641,658.70/11,378.88
  6. Step 6: Final answer
    x = 11,129.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.