Home / 21,057.33-31,558.67-8,562.81

Finding the Fourth Proportional to 21,057.33, 31,558.67 and 8,562.81

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Solution

The fourth proportional to 21,057.33, 31,558.67 and 8,562.81 is: 12,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.33 : 31,558.67 = 8,562.81 : x
  2. Step 2: Convert to fraction form
    21,057.33/31,558.67 = 8,562.81/x
  3. Step 3: Cross multiply
    21,057.33x = 31,558.67 × 8,562.81
  4. Step 4: Simplify right side
    21,057.33x = 270,230,895.06
  5. Step 5: Solve for x
    x = 270,230,895.06/21,057.33
  6. Step 6: Final answer
    x = 12,833.10

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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.