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Finding the Fourth Proportional to 11,760.96, 17,641.44 and 11,615.20

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Solution

The fourth proportional to 11,760.96, 17,641.44 and 11,615.20 is: 17,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,760.96 : 17,641.44 = 11,615.20 : x
  2. Step 2: Convert to fraction form
    11,760.96/17,641.44 = 11,615.20/x
  3. Step 3: Cross multiply
    11,760.96x = 17,641.44 × 11,615.20
  4. Step 4: Simplify right side
    11,760.96x = 204,908,853.89
  5. Step 5: Solve for x
    x = 204,908,853.89/11,760.96
  6. Step 6: Final answer
    x = 17,422.80

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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.