Home / 12,455.14-18,690.80-4,663.88

Finding the Fourth Proportional to 12,455.14, 18,690.80 and 4,663.88

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Solution

The fourth proportional to 12,455.14, 18,690.80 and 4,663.88 is: 6,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.14 : 18,690.80 = 4,663.88 : x
  2. Step 2: Convert to fraction form
    12,455.14/18,690.80 = 4,663.88/x
  3. Step 3: Cross multiply
    12,455.14x = 18,690.80 × 4,663.88
  4. Step 4: Simplify right side
    12,455.14x = 87,171,648.30
  5. Step 5: Solve for x
    x = 87,171,648.30/12,455.14
  6. Step 6: Final answer
    x = 6,998.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.