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Finding the Fourth Proportional to 11,635.40, 17,433.90 and 9,907.40

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Solution

The fourth proportional to 11,635.40, 17,433.90 and 9,907.40 is: 14,844.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,635.40 : 17,433.90 = 9,907.40 : x
  2. Step 2: Convert to fraction form
    11,635.40/17,433.90 = 9,907.40/x
  3. Step 3: Cross multiply
    11,635.40x = 17,433.90 × 9,907.40
  4. Step 4: Simplify right side
    11,635.40x = 172,724,620.86
  5. Step 5: Solve for x
    x = 172,724,620.86/11,635.40
  6. Step 6: Final answer
    x = 14,844.75

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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.