Home / 21,895.72-30,211.62-12,461.80

Finding the Fourth Proportional to 21,895.72, 30,211.62 and 12,461.80

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Solution

The fourth proportional to 21,895.72, 30,211.62 and 12,461.80 is: 17,194.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,895.72 : 30,211.62 = 12,461.80 : x
  2. Step 2: Convert to fraction form
    21,895.72/30,211.62 = 12,461.80/x
  3. Step 3: Cross multiply
    21,895.72x = 30,211.62 × 12,461.80
  4. Step 4: Simplify right side
    21,895.72x = 376,491,166.12
  5. Step 5: Solve for x
    x = 376,491,166.12/21,895.72
  6. Step 6: Final answer
    x = 17,194.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.