Home / 10,865.18-16,300.26-3,939.68

Finding the Fourth Proportional to 10,865.18, 16,300.26 and 3,939.68

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Solution

The fourth proportional to 10,865.18, 16,300.26 and 3,939.68 is: 5,910.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,865.18 : 16,300.26 = 3,939.68 : x
  2. Step 2: Convert to fraction form
    10,865.18/16,300.26 = 3,939.68/x
  3. Step 3: Cross multiply
    10,865.18x = 16,300.26 × 3,939.68
  4. Step 4: Simplify right side
    10,865.18x = 64,217,808.32
  5. Step 5: Solve for x
    x = 64,217,808.32/10,865.18
  6. Step 6: Final answer
    x = 5,910.42

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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.