Home / 21,206.44-31,805.56-6,411.89

Finding the Fourth Proportional to 21,206.44, 31,805.56 and 6,411.89

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Solution

The fourth proportional to 21,206.44, 31,805.56 and 6,411.89 is: 9,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.44 : 31,805.56 = 6,411.89 : x
  2. Step 2: Convert to fraction form
    21,206.44/31,805.56 = 6,411.89/x
  3. Step 3: Cross multiply
    21,206.44x = 31,805.56 × 6,411.89
  4. Step 4: Simplify right side
    21,206.44x = 203,933,839.64
  5. Step 5: Solve for x
    x = 203,933,839.64/21,206.44
  6. Step 6: Final answer
    x = 9,616.60

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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.