Home / 12,171.29-16,791.05-7,132.96

Finding the Fourth Proportional to 12,171.29, 16,791.05 and 7,132.96

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Solution

The fourth proportional to 12,171.29, 16,791.05 and 7,132.96 is: 9,840.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.29 : 16,791.05 = 7,132.96 : x
  2. Step 2: Convert to fraction form
    12,171.29/16,791.05 = 7,132.96/x
  3. Step 3: Cross multiply
    12,171.29x = 16,791.05 × 7,132.96
  4. Step 4: Simplify right side
    12,171.29x = 119,769,768.39
  5. Step 5: Solve for x
    x = 119,769,768.39/12,171.29
  6. Step 6: Final answer
    x = 9,840.35

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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.