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Finding the Fourth Proportional to 18,262.48, 25,202.28 and 9,879

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Solution

The fourth proportional to 18,262.48, 25,202.28 and 9,879 is: 13,633.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,262.48 : 25,202.28 = 9,879 : x
  2. Step 2: Convert to fraction form
    18,262.48/25,202.28 = 9,879/x
  3. Step 3: Cross multiply
    18,262.48x = 25,202.28 × 9,879
  4. Step 4: Simplify right side
    18,262.48x = 248,973,324.12
  5. Step 5: Solve for x
    x = 248,973,324.12/18,262.48
  6. Step 6: Final answer
    x = 13,633.05

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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.