Home / 12,834.78-19,239.20-5,343.86

Finding the Fourth Proportional to 12,834.78, 19,239.20 and 5,343.86

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Solution

The fourth proportional to 12,834.78, 19,239.20 and 5,343.86 is: 8,010.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,834.78 : 19,239.20 = 5,343.86 : x
  2. Step 2: Convert to fraction form
    12,834.78/19,239.20 = 5,343.86/x
  3. Step 3: Cross multiply
    12,834.78x = 19,239.20 × 5,343.86
  4. Step 4: Simplify right side
    12,834.78x = 102,811,468.40
  5. Step 5: Solve for x
    x = 102,811,468.40/12,834.78
  6. Step 6: Final answer
    x = 8,010.38

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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.