Home / 10,890.27-16,337.03-3,869.70

Finding the Fourth Proportional to 10,890.27, 16,337.03 and 3,869.70

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Solution

The fourth proportional to 10,890.27, 16,337.03 and 3,869.70 is: 5,805.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,890.27 : 16,337.03 = 3,869.70 : x
  2. Step 2: Convert to fraction form
    10,890.27/16,337.03 = 3,869.70/x
  3. Step 3: Cross multiply
    10,890.27x = 16,337.03 × 3,869.70
  4. Step 4: Simplify right side
    10,890.27x = 63,219,385.64
  5. Step 5: Solve for x
    x = 63,219,385.64/10,890.27
  6. Step 6: Final answer
    x = 5,805.13

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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.