Home / 10,890.34-16,336.50-3,869.68

Finding the Fourth Proportional to 10,890.34, 16,336.50 and 3,869.68

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Solution

The fourth proportional to 10,890.34, 16,336.50 and 3,869.68 is: 5,804.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.34 : 16,336.50 = 3,869.68 : x
  2. Step 2: Convert to fraction form
    10,890.34/16,336.50 = 3,869.68/x
  3. Step 3: Cross multiply
    10,890.34x = 16,336.50 × 3,869.68
  4. Step 4: Simplify right side
    10,890.34x = 63,217,027.32
  5. Step 5: Solve for x
    x = 63,217,027.32/10,890.34
  6. Step 6: Final answer
    x = 5,804.87

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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.