Home / 21,233.71-31,850.64-6,442.75

Finding the Fourth Proportional to 21,233.71, 31,850.64 and 6,442.75

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Solution

The fourth proportional to 21,233.71, 31,850.64 and 6,442.75 is: 9,664.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.71 : 31,850.64 = 6,442.75 : x
  2. Step 2: Convert to fraction form
    21,233.71/31,850.64 = 6,442.75/x
  3. Step 3: Cross multiply
    21,233.71x = 31,850.64 × 6,442.75
  4. Step 4: Simplify right side
    21,233.71x = 205,205,678.65
  5. Step 5: Solve for x
    x = 205,205,678.65/21,233.71
  6. Step 6: Final answer
    x = 9,664.15

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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.