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Finding the Fourth Proportional to 13,171.76, 18,177.42 and 7,203.32

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Solution

The fourth proportional to 13,171.76, 18,177.42 and 7,203.32 is: 9,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,171.76 : 18,177.42 = 7,203.32 : x
  2. Step 2: Convert to fraction form
    13,171.76/18,177.42 = 7,203.32/x
  3. Step 3: Cross multiply
    13,171.76x = 18,177.42 × 7,203.32
  4. Step 4: Simplify right side
    13,171.76x = 130,937,773.03
  5. Step 5: Solve for x
    x = 130,937,773.03/13,171.76
  6. Step 6: Final answer
    x = 9,940.80

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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.