Home / 21,217.68-31,827.12-5,635.32

Finding the Fourth Proportional to 21,217.68, 31,827.12 and 5,635.32

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Solution

The fourth proportional to 21,217.68, 31,827.12 and 5,635.32 is: 8,453.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.68 : 31,827.12 = 5,635.32 : x
  2. Step 2: Convert to fraction form
    21,217.68/31,827.12 = 5,635.32/x
  3. Step 3: Cross multiply
    21,217.68x = 31,827.12 × 5,635.32
  4. Step 4: Simplify right side
    21,217.68x = 179,356,005.88
  5. Step 5: Solve for x
    x = 179,356,005.88/21,217.68
  6. Step 6: Final answer
    x = 8,453.14

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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.