Home / 21,234.29-31,849.81-6,443.28

Finding the Fourth Proportional to 21,234.29, 31,849.81 and 6,443.28

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Solution

The fourth proportional to 21,234.29, 31,849.81 and 6,443.28 is: 9,664.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,234.29 : 31,849.81 = 6,443.28 : x
  2. Step 2: Convert to fraction form
    21,234.29/31,849.81 = 6,443.28/x
  3. Step 3: Cross multiply
    21,234.29x = 31,849.81 × 6,443.28
  4. Step 4: Simplify right side
    21,234.29x = 205,217,227.67
  5. Step 5: Solve for x
    x = 205,217,227.67/21,234.29
  6. Step 6: Final answer
    x = 9,664.43

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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.