Home / 13,235.20-19,834.80-6,665.92

Finding the Fourth Proportional to 13,235.20, 19,834.80 and 6,665.92

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Solution

The fourth proportional to 13,235.20, 19,834.80 and 6,665.92 is: 9,989.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.20 : 19,834.80 = 6,665.92 : x
  2. Step 2: Convert to fraction form
    13,235.20/19,834.80 = 6,665.92/x
  3. Step 3: Cross multiply
    13,235.20x = 19,834.80 × 6,665.92
  4. Step 4: Simplify right side
    13,235.20x = 132,217,190.02
  5. Step 5: Solve for x
    x = 132,217,190.02/13,235.20
  6. Step 6: Final answer
    x = 9,989.81

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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.