Home / 13,909.90-20,869.31-4,049.77

Finding the Fourth Proportional to 13,909.90, 20,869.31 and 4,049.77

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Solution

The fourth proportional to 13,909.90, 20,869.31 and 4,049.77 is: 6,075.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.90 : 20,869.31 = 4,049.77 : x
  2. Step 2: Convert to fraction form
    13,909.90/20,869.31 = 4,049.77/x
  3. Step 3: Cross multiply
    13,909.90x = 20,869.31 × 4,049.77
  4. Step 4: Simplify right side
    13,909.90x = 84,515,905.56
  5. Step 5: Solve for x
    x = 84,515,905.56/13,909.90
  6. Step 6: Final answer
    x = 6,075.95

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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.