Home / 13,729.86-20,595.90-3,869.94

Finding the Fourth Proportional to 13,729.86, 20,595.90 and 3,869.94

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Solution

The fourth proportional to 13,729.86, 20,595.90 and 3,869.94 is: 5,805.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729.86 : 20,595.90 = 3,869.94 : x
  2. Step 2: Convert to fraction form
    13,729.86/20,595.90 = 3,869.94/x
  3. Step 3: Cross multiply
    13,729.86x = 20,595.90 × 3,869.94
  4. Step 4: Simplify right side
    13,729.86x = 79,704,897.25
  5. Step 5: Solve for x
    x = 79,704,897.25/13,729.86
  6. Step 6: Final answer
    x = 5,805.22

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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.