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Finding the Fourth Proportional to 17,066.80, 25,571.40 and 11,220.40

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Solution

The fourth proportional to 17,066.80, 25,571.40 and 11,220.40 is: 16,811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,066.80 : 25,571.40 = 11,220.40 : x
  2. Step 2: Convert to fraction form
    17,066.80/25,571.40 = 11,220.40/x
  3. Step 3: Cross multiply
    17,066.80x = 25,571.40 × 11,220.40
  4. Step 4: Simplify right side
    17,066.80x = 286,921,336.56
  5. Step 5: Solve for x
    x = 286,921,336.56/17,066.80
  6. Step 6: Final answer
    x = 16,811.67

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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.