Home / 21,281.20-31,927.29-10,196.44

Finding the Fourth Proportional to 21,281.20, 31,927.29 and 10,196.44

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Solution

The fourth proportional to 21,281.20, 31,927.29 and 10,196.44 is: 15,297.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,281.20 : 31,927.29 = 10,196.44 : x
  2. Step 2: Convert to fraction form
    21,281.20/31,927.29 = 10,196.44/x
  3. Step 3: Cross multiply
    21,281.20x = 31,927.29 × 10,196.44
  4. Step 4: Simplify right side
    21,281.20x = 325,544,696.85
  5. Step 5: Solve for x
    x = 325,544,696.85/21,281.20
  6. Step 6: Final answer
    x = 15,297.29

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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.