Home / 21,424.87-32,138.83-6,631.88

Finding the Fourth Proportional to 21,424.87, 32,138.83 and 6,631.88

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Solution

The fourth proportional to 21,424.87, 32,138.83 and 6,631.88 is: 9,948.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,424.87 : 32,138.83 = 6,631.88 : x
  2. Step 2: Convert to fraction form
    21,424.87/32,138.83 = 6,631.88/x
  3. Step 3: Cross multiply
    21,424.87x = 32,138.83 × 6,631.88
  4. Step 4: Simplify right side
    21,424.87x = 213,140,863.90
  5. Step 5: Solve for x
    x = 213,140,863.90/21,424.87
  6. Step 6: Final answer
    x = 9,948.29

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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.