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Finding the Fourth Proportional to 18,201.30, 25,101.27 and 13,146.90

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Solution

The fourth proportional to 18,201.30, 25,101.27 and 13,146.90 is: 18,130.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,201.30 : 25,101.27 = 13,146.90 : x
  2. Step 2: Convert to fraction form
    18,201.30/25,101.27 = 13,146.90/x
  3. Step 3: Cross multiply
    18,201.30x = 25,101.27 × 13,146.90
  4. Step 4: Simplify right side
    18,201.30x = 330,003,886.56
  5. Step 5: Solve for x
    x = 330,003,886.56/18,201.30
  6. Step 6: Final answer
    x = 18,130.79

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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.