Home / 21,233.08-31,849.52-5,438.08

Finding the Fourth Proportional to 21,233.08, 31,849.52 and 5,438.08

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Solution

The fourth proportional to 21,233.08, 31,849.52 and 5,438.08 is: 8,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.08 : 31,849.52 = 5,438.08 : x
  2. Step 2: Convert to fraction form
    21,233.08/31,849.52 = 5,438.08/x
  3. Step 3: Cross multiply
    21,233.08x = 31,849.52 × 5,438.08
  4. Step 4: Simplify right side
    21,233.08x = 173,200,078.47
  5. Step 5: Solve for x
    x = 173,200,078.47/21,233.08
  6. Step 6: Final answer
    x = 8,157.09

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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.