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Finding the Fourth Proportional to 11,487.60, 17,250.60 and 7,609.20

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Solution

The fourth proportional to 11,487.60, 17,250.60 and 7,609.20 is: 11,426.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487.60 : 17,250.60 = 7,609.20 : x
  2. Step 2: Convert to fraction form
    11,487.60/17,250.60 = 7,609.20/x
  3. Step 3: Cross multiply
    11,487.60x = 17,250.60 × 7,609.20
  4. Step 4: Simplify right side
    11,487.60x = 131,263,265.52
  5. Step 5: Solve for x
    x = 131,263,265.52/11,487.60
  6. Step 6: Final answer
    x = 11,426.52

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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.