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Finding the Fourth Proportional to 18,883.64, 26,072.94 and 13,230.92

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Solution

The fourth proportional to 18,883.64, 26,072.94 and 13,230.92 is: 18,268.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.64 : 26,072.94 = 13,230.92 : x
  2. Step 2: Convert to fraction form
    18,883.64/26,072.94 = 13,230.92/x
  3. Step 3: Cross multiply
    18,883.64x = 26,072.94 × 13,230.92
  4. Step 4: Simplify right side
    18,883.64x = 344,968,852.94
  5. Step 5: Solve for x
    x = 344,968,852.94/18,883.64
  6. Step 6: Final answer
    x = 18,268.14

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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.