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Finding the Fourth Proportional to 18,263, 25,203.12 and 9,879.68

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Solution

The fourth proportional to 18,263, 25,203.12 and 9,879.68 is: 13,634.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,263 : 25,203.12 = 9,879.68 : x
  2. Step 2: Convert to fraction form
    18,263/25,203.12 = 9,879.68/x
  3. Step 3: Cross multiply
    18,263x = 25,203.12 × 9,879.68
  4. Step 4: Simplify right side
    18,263x = 248,998,760.60
  5. Step 5: Solve for x
    x = 248,998,760.60/18,263
  6. Step 6: Final answer
    x = 13,634.06

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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.