Home / 21,409.20-32,116.87-6,619.27

Finding the Fourth Proportional to 21,409.20, 32,116.87 and 6,619.27

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Solution

The fourth proportional to 21,409.20, 32,116.87 and 6,619.27 is: 9,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,409.20 : 32,116.87 = 6,619.27 : x
  2. Step 2: Convert to fraction form
    21,409.20/32,116.87 = 6,619.27/x
  3. Step 3: Cross multiply
    21,409.20x = 32,116.87 × 6,619.27
  4. Step 4: Simplify right side
    21,409.20x = 212,590,234.08
  5. Step 5: Solve for x
    x = 212,590,234.08/21,409.20
  6. Step 6: Final answer
    x = 9,929.85

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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.