Home / 20,696.88-31,049.90-7,549.21

Finding the Fourth Proportional to 20,696.88, 31,049.90 and 7,549.21

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Solution

The fourth proportional to 20,696.88, 31,049.90 and 7,549.21 is: 11,325.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.88 : 31,049.90 = 7,549.21 : x
  2. Step 2: Convert to fraction form
    20,696.88/31,049.90 = 7,549.21/x
  3. Step 3: Cross multiply
    20,696.88x = 31,049.90 × 7,549.21
  4. Step 4: Simplify right side
    20,696.88x = 234,402,022.58
  5. Step 5: Solve for x
    x = 234,402,022.58/20,696.88
  6. Step 6: Final answer
    x = 11,325.48

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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.