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Finding the Fourth Proportional to 11,358.72, 17,019 and 8,571.36

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Solution

The fourth proportional to 11,358.72, 17,019 and 8,571.36 is: 12,842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,358.72 : 17,019 = 8,571.36 : x
  2. Step 2: Convert to fraction form
    11,358.72/17,019 = 8,571.36/x
  3. Step 3: Cross multiply
    11,358.72x = 17,019 × 8,571.36
  4. Step 4: Simplify right side
    11,358.72x = 145,875,975.84
  5. Step 5: Solve for x
    x = 145,875,975.84/11,358.72
  6. Step 6: Final answer
    x = 12,842.64

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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.