Home / 13,271.20-19,911.32-8,335.06

Finding the Fourth Proportional to 13,271.20, 19,911.32 and 8,335.06

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Solution

The fourth proportional to 13,271.20, 19,911.32 and 8,335.06 is: 12,505.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,271.20 : 19,911.32 = 8,335.06 : x
  2. Step 2: Convert to fraction form
    13,271.20/19,911.32 = 8,335.06/x
  3. Step 3: Cross multiply
    13,271.20x = 19,911.32 × 8,335.06
  4. Step 4: Simplify right side
    13,271.20x = 165,961,986.68
  5. Step 5: Solve for x
    x = 165,961,986.68/13,271.20
  6. Step 6: Final answer
    x = 12,505.43

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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.