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Finding the Fourth Proportional to 11,761.60, 17,656.80 and 11,675.20

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Solution

The fourth proportional to 11,761.60, 17,656.80 and 11,675.20 is: 17,527.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,761.60 : 17,656.80 = 11,675.20 : x
  2. Step 2: Convert to fraction form
    11,761.60/17,656.80 = 11,675.20/x
  3. Step 3: Cross multiply
    11,761.60x = 17,656.80 × 11,675.20
  4. Step 4: Simplify right side
    11,761.60x = 206,146,671.36
  5. Step 5: Solve for x
    x = 206,146,671.36/11,761.60
  6. Step 6: Final answer
    x = 17,527.09

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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.