Home / 13,909.08-20,868.48-6,118.50

Finding the Fourth Proportional to 13,909.08, 20,868.48 and 6,118.50

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Solution

The fourth proportional to 13,909.08, 20,868.48 and 6,118.50 is: 9,179.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.08 : 20,868.48 = 6,118.50 : x
  2. Step 2: Convert to fraction form
    13,909.08/20,868.48 = 6,118.50/x
  3. Step 3: Cross multiply
    13,909.08x = 20,868.48 × 6,118.50
  4. Step 4: Simplify right side
    13,909.08x = 127,683,794.88
  5. Step 5: Solve for x
    x = 127,683,794.88/13,909.08
  6. Step 6: Final answer
    x = 9,179.89

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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.