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Finding the Fourth Proportional to 18,169.62, 25,071.83 and 10,514.21

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Solution

The fourth proportional to 18,169.62, 25,071.83 and 10,514.21 is: 14,508.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,169.62 : 25,071.83 = 10,514.21 : x
  2. Step 2: Convert to fraction form
    18,169.62/25,071.83 = 10,514.21/x
  3. Step 3: Cross multiply
    18,169.62x = 25,071.83 × 10,514.21
  4. Step 4: Simplify right side
    18,169.62x = 263,610,347.20
  5. Step 5: Solve for x
    x = 263,610,347.20/18,169.62
  6. Step 6: Final answer
    x = 14,508.31

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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.