Home / 11,487.60-17,231.40-8,571.60

Finding the Fourth Proportional to 11,487.60, 17,231.40 and 8,571.60

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Solution

The fourth proportional to 11,487.60, 17,231.40 and 8,571.60 is: 12,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.60 : 17,231.40 = 8,571.60 : x
  2. Step 2: Convert to fraction form
    11,487.60/17,231.40 = 8,571.60/x
  3. Step 3: Cross multiply
    11,487.60x = 17,231.40 × 8,571.60
  4. Step 4: Simplify right side
    11,487.60x = 147,700,668.24
  5. Step 5: Solve for x
    x = 147,700,668.24/11,487.60
  6. Step 6: Final answer
    x = 12,857.40

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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.