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Finding the Fourth Proportional to 17,720.70, 24,450.15 and 11,425.50

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Solution

The fourth proportional to 17,720.70, 24,450.15 and 11,425.50 is: 15,764.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,720.70 : 24,450.15 = 11,425.50 : x
  2. Step 2: Convert to fraction form
    17,720.70/24,450.15 = 11,425.50/x
  3. Step 3: Cross multiply
    17,720.70x = 24,450.15 × 11,425.50
  4. Step 4: Simplify right side
    17,720.70x = 279,355,188.83
  5. Step 5: Solve for x
    x = 279,355,188.83/17,720.70
  6. Step 6: Final answer
    x = 15,764.34

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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.