Home / 12,178.30-18,260.05-4,773.89

Finding the Fourth Proportional to 12,178.30, 18,260.05 and 4,773.89

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Solution

The fourth proportional to 12,178.30, 18,260.05 and 4,773.89 is: 7,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.30 : 18,260.05 = 4,773.89 : x
  2. Step 2: Convert to fraction form
    12,178.30/18,260.05 = 4,773.89/x
  3. Step 3: Cross multiply
    12,178.30x = 18,260.05 × 4,773.89
  4. Step 4: Simplify right side
    12,178.30x = 87,171,470.09
  5. Step 5: Solve for x
    x = 87,171,470.09/12,178.30
  6. Step 6: Final answer
    x = 7,157.93

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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.