Home / 12,623.38-18,930.31-4,188.31

Finding the Fourth Proportional to 12,623.38, 18,930.31 and 4,188.31

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Solution

The fourth proportional to 12,623.38, 18,930.31 and 4,188.31 is: 6,280.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,623.38 : 18,930.31 = 4,188.31 : x
  2. Step 2: Convert to fraction form
    12,623.38/18,930.31 = 4,188.31/x
  3. Step 3: Cross multiply
    12,623.38x = 18,930.31 × 4,188.31
  4. Step 4: Simplify right side
    12,623.38x = 79,285,948.88
  5. Step 5: Solve for x
    x = 79,285,948.88/12,623.38
  6. Step 6: Final answer
    x = 6,280.88

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1.5x scale

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.