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Finding the Fourth Proportional to 11,425.14, 17,137.71 and 7,528.64

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Solution

The fourth proportional to 11,425.14, 17,137.71 and 7,528.64 is: 11,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.14 : 17,137.71 = 7,528.64 : x
  2. Step 2: Convert to fraction form
    11,425.14/17,137.71 = 7,528.64/x
  3. Step 3: Cross multiply
    11,425.14x = 17,137.71 × 7,528.64
  4. Step 4: Simplify right side
    11,425.14x = 129,023,563.33
  5. Step 5: Solve for x
    x = 129,023,563.33/11,425.14
  6. Step 6: Final answer
    x = 11,292.95

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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.