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Finding the Fourth Proportional to 12,791.37, 17,652.06 and 7,487.19

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Solution

The fourth proportional to 12,791.37, 17,652.06 and 7,487.19 is: 10,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,791.37 : 17,652.06 = 7,487.19 : x
  2. Step 2: Convert to fraction form
    12,791.37/17,652.06 = 7,487.19/x
  3. Step 3: Cross multiply
    12,791.37x = 17,652.06 × 7,487.19
  4. Step 4: Simplify right side
    12,791.37x = 132,164,327.11
  5. Step 5: Solve for x
    x = 132,164,327.11/12,791.37
  6. Step 6: Final answer
    x = 10,332.30

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Double scale
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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.