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Finding the Fourth Proportional to 11,625.69, 17,438.20 and 4,230.28

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Solution

The fourth proportional to 11,625.69, 17,438.20 and 4,230.28 is: 6,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,625.69 : 17,438.20 = 4,230.28 : x
  2. Step 2: Convert to fraction form
    11,625.69/17,438.20 = 4,230.28/x
  3. Step 3: Cross multiply
    11,625.69x = 17,438.20 × 4,230.28
  4. Step 4: Simplify right side
    11,625.69x = 73,768,468.70
  5. Step 5: Solve for x
    x = 73,768,468.70/11,625.69
  6. Step 6: Final answer
    x = 6,345.30

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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.