Home / 13,229.80-19,835.10-5,434.60

Finding the Fourth Proportional to 13,229.80, 19,835.10 and 5,434.60

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Solution

The fourth proportional to 13,229.80, 19,835.10 and 5,434.60 is: 8,147.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,229.80 : 19,835.10 = 5,434.60 : x
  2. Step 2: Convert to fraction form
    13,229.80/19,835.10 = 5,434.60/x
  3. Step 3: Cross multiply
    13,229.80x = 19,835.10 × 5,434.60
  4. Step 4: Simplify right side
    13,229.80x = 107,795,834.46
  5. Step 5: Solve for x
    x = 107,795,834.46/13,229.80
  6. Step 6: Final answer
    x = 8,147.96

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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.