Home / 21,250.54-31,846.65-13,445.38

Finding the Fourth Proportional to 21,250.54, 31,846.65 and 13,445.38

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Solution

The fourth proportional to 21,250.54, 31,846.65 and 13,445.38 is: 20,149.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,250.54 : 31,846.65 = 13,445.38 : x
  2. Step 2: Convert to fraction form
    21,250.54/31,846.65 = 13,445.38/x
  3. Step 3: Cross multiply
    21,250.54x = 31,846.65 × 13,445.38
  4. Step 4: Simplify right side
    21,250.54x = 428,190,310.98
  5. Step 5: Solve for x
    x = 428,190,310.98/21,250.54
  6. Step 6: Final answer
    x = 20,149.62

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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.