Home / 21,982.66-30,335.44-12,907.88

Finding the Fourth Proportional to 21,982.66, 30,335.44 and 12,907.88

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Solution

The fourth proportional to 21,982.66, 30,335.44 and 12,907.88 is: 17,812.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,982.66 : 30,335.44 = 12,907.88 : x
  2. Step 2: Convert to fraction form
    21,982.66/30,335.44 = 12,907.88/x
  3. Step 3: Cross multiply
    21,982.66x = 30,335.44 × 12,907.88
  4. Step 4: Simplify right side
    21,982.66x = 391,566,219.27
  5. Step 5: Solve for x
    x = 391,566,219.27/21,982.66
  6. Step 6: Final answer
    x = 17,812.50

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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.