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Finding the Fourth Proportional to 18,262.91, 25,202.85 and 9,879.41

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Solution

The fourth proportional to 18,262.91, 25,202.85 and 9,879.41 is: 13,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,262.91 : 25,202.85 = 9,879.41 : x
  2. Step 2: Convert to fraction form
    18,262.91/25,202.85 = 9,879.41/x
  3. Step 3: Cross multiply
    18,262.91x = 25,202.85 × 9,879.41
  4. Step 4: Simplify right side
    18,262.91x = 248,989,288.32
  5. Step 5: Solve for x
    x = 248,989,288.32/18,262.91
  6. Step 6: Final answer
    x = 13,633.60

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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.