Home / 21,271.12-31,908.30-6,481.30

Finding the Fourth Proportional to 21,271.12, 31,908.30 and 6,481.30

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Solution

The fourth proportional to 21,271.12, 31,908.30 and 6,481.30 is: 9,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.12 : 31,908.30 = 6,481.30 : x
  2. Step 2: Convert to fraction form
    21,271.12/31,908.30 = 6,481.30/x
  3. Step 3: Cross multiply
    21,271.12x = 31,908.30 × 6,481.30
  4. Step 4: Simplify right side
    21,271.12x = 206,807,264.79
  5. Step 5: Solve for x
    x = 206,807,264.79/21,271.12
  6. Step 6: Final answer
    x = 9,722.44

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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.