Home / 13,911.08-20,871.48-6,120.50

Finding the Fourth Proportional to 13,911.08, 20,871.48 and 6,120.50

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Solution

The fourth proportional to 13,911.08, 20,871.48 and 6,120.50 is: 9,182.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.08 : 20,871.48 = 6,120.50 : x
  2. Step 2: Convert to fraction form
    13,911.08/20,871.48 = 6,120.50/x
  3. Step 3: Cross multiply
    13,911.08x = 20,871.48 × 6,120.50
  4. Step 4: Simplify right side
    13,911.08x = 127,743,893.34
  5. Step 5: Solve for x
    x = 127,743,893.34/13,911.08
  6. Step 6: Final answer
    x = 9,182.89

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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.