Home / 21,137.24-31,711.12-6,346.44

Finding the Fourth Proportional to 21,137.24, 31,711.12 and 6,346.44

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Solution

The fourth proportional to 21,137.24, 31,711.12 and 6,346.44 is: 9,521.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.24 : 31,711.12 = 6,346.44 : x
  2. Step 2: Convert to fraction form
    21,137.24/31,711.12 = 6,346.44/x
  3. Step 3: Cross multiply
    21,137.24x = 31,711.12 × 6,346.44
  4. Step 4: Simplify right side
    21,137.24x = 201,252,720.41
  5. Step 5: Solve for x
    x = 201,252,720.41/21,137.24
  6. Step 6: Final answer
    x = 9,521.24

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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.