Home / 11,958.60-17,931.38-7,741.28

Finding the Fourth Proportional to 11,958.60, 17,931.38 and 7,741.28

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Solution

The fourth proportional to 11,958.60, 17,931.38 and 7,741.28 is: 11,607.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.60 : 17,931.38 = 7,741.28 : x
  2. Step 2: Convert to fraction form
    11,958.60/17,931.38 = 7,741.28/x
  3. Step 3: Cross multiply
    11,958.60x = 17,931.38 × 7,741.28
  4. Step 4: Simplify right side
    11,958.60x = 138,811,897.55
  5. Step 5: Solve for x
    x = 138,811,897.55/11,958.60
  6. Step 6: Final answer
    x = 11,607.71

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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.