Home / 12,492.72-18,739.44-6,942.96

Finding the Fourth Proportional to 12,492.72, 18,739.44 and 6,942.96

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Solution

The fourth proportional to 12,492.72, 18,739.44 and 6,942.96 is: 10,414.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.72 : 18,739.44 = 6,942.96 : x
  2. Step 2: Convert to fraction form
    12,492.72/18,739.44 = 6,942.96/x
  3. Step 3: Cross multiply
    12,492.72x = 18,739.44 × 6,942.96
  4. Step 4: Simplify right side
    12,492.72x = 130,107,182.34
  5. Step 5: Solve for x
    x = 130,107,182.34/12,492.72
  6. Step 6: Final answer
    x = 10,414.64

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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.