Home / 21,057.41-31,558.73-8,562.87

Finding the Fourth Proportional to 21,057.41, 31,558.73 and 8,562.87

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Solution

The fourth proportional to 21,057.41, 31,558.73 and 8,562.87 is: 12,833.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.41 : 31,558.73 = 8,562.87 : x
  2. Step 2: Convert to fraction form
    21,057.41/31,558.73 = 8,562.87/x
  3. Step 3: Cross multiply
    21,057.41x = 31,558.73 × 8,562.87
  4. Step 4: Simplify right side
    21,057.41x = 270,233,259.54
  5. Step 5: Solve for x
    x = 270,233,259.54/21,057.41
  6. Step 6: Final answer
    x = 12,833.17

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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.