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Finding the Fourth Proportional to 18,633.62, 25,714.12 and 10,135.54

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Solution

The fourth proportional to 18,633.62, 25,714.12 and 10,135.54 is: 13,986.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.62 : 25,714.12 = 10,135.54 : x
  2. Step 2: Convert to fraction form
    18,633.62/25,714.12 = 10,135.54/x
  3. Step 3: Cross multiply
    18,633.62x = 25,714.12 × 10,135.54
  4. Step 4: Simplify right side
    18,633.62x = 260,626,491.82
  5. Step 5: Solve for x
    x = 260,626,491.82/18,633.62
  6. Step 6: Final answer
    x = 13,986.90

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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.