Home / 14,189.80-21,308.42-8,865.37

Finding the Fourth Proportional to 14,189.80, 21,308.42 and 8,865.37

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Solution

The fourth proportional to 14,189.80, 21,308.42 and 8,865.37 is: 13,312.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,189.80 : 21,308.42 = 8,865.37 : x
  2. Step 2: Convert to fraction form
    14,189.80/21,308.42 = 8,865.37/x
  3. Step 3: Cross multiply
    14,189.80x = 21,308.42 × 8,865.37
  4. Step 4: Simplify right side
    14,189.80x = 188,906,876.55
  5. Step 5: Solve for x
    x = 188,906,876.55/14,189.80
  6. Step 6: Final answer
    x = 13,312.87

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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.