Home / 20,895.18-31,422.33-16,687.86

Finding the Fourth Proportional to 20,895.18, 31,422.33 and 16,687.86

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Solution

The fourth proportional to 20,895.18, 31,422.33 and 16,687.86 is: 25,095.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,895.18 : 31,422.33 = 16,687.86 : x
  2. Step 2: Convert to fraction form
    20,895.18/31,422.33 = 16,687.86/x
  3. Step 3: Cross multiply
    20,895.18x = 31,422.33 × 16,687.86
  4. Step 4: Simplify right side
    20,895.18x = 524,371,443.91
  5. Step 5: Solve for x
    x = 524,371,443.91/20,895.18
  6. Step 6: Final answer
    x = 25,095.33

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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.