Home / 21,776.87-30,050.57-12,822.47

Finding the Fourth Proportional to 21,776.87, 30,050.57 and 12,822.47

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Solution

The fourth proportional to 21,776.87, 30,050.57 and 12,822.47 is: 17,694.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,776.87 : 30,050.57 = 12,822.47 : x
  2. Step 2: Convert to fraction form
    21,776.87/30,050.57 = 12,822.47/x
  3. Step 3: Cross multiply
    21,776.87x = 30,050.57 × 12,822.47
  4. Step 4: Simplify right side
    21,776.87x = 385,322,317.94
  5. Step 5: Solve for x
    x = 385,322,317.94/21,776.87
  6. Step 6: Final answer
    x = 17,694.11

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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.