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Finding the Fourth Proportional to 12,765.41, 17,615.92 and 7,099.86

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Solution

The fourth proportional to 12,765.41, 17,615.92 and 7,099.86 is: 9,797.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,765.41 : 17,615.92 = 7,099.86 : x
  2. Step 2: Convert to fraction form
    12,765.41/17,615.92 = 7,099.86/x
  3. Step 3: Cross multiply
    12,765.41x = 17,615.92 × 7,099.86
  4. Step 4: Simplify right side
    12,765.41x = 125,070,530.27
  5. Step 5: Solve for x
    x = 125,070,530.27/12,765.41
  6. Step 6: Final answer
    x = 9,797.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.