Home / 21,280.35-31,860.52-11,262.41

Finding the Fourth Proportional to 21,280.35, 31,860.52 and 11,262.41

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Solution

The fourth proportional to 21,280.35, 31,860.52 and 11,262.41 is: 16,861.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,280.35 : 31,860.52 = 11,262.41 : x
  2. Step 2: Convert to fraction form
    21,280.35/31,860.52 = 11,262.41/x
  3. Step 3: Cross multiply
    21,280.35x = 31,860.52 × 11,262.41
  4. Step 4: Simplify right side
    21,280.35x = 358,826,239.05
  5. Step 5: Solve for x
    x = 358,826,239.05/21,280.35
  6. Step 6: Final answer
    x = 16,861.86

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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.