Home / 21,777.97-30,051.78-12,216.53

Finding the Fourth Proportional to 21,777.97, 30,051.78 and 12,216.53

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Solution

The fourth proportional to 21,777.97, 30,051.78 and 12,216.53 is: 16,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,777.97 : 30,051.78 = 12,216.53 : x
  2. Step 2: Convert to fraction form
    21,777.97/30,051.78 = 12,216.53/x
  3. Step 3: Cross multiply
    21,777.97x = 30,051.78 × 12,216.53
  4. Step 4: Simplify right side
    21,777.97x = 367,128,471.92
  5. Step 5: Solve for x
    x = 367,128,471.92/21,777.97
  6. Step 6: Final answer
    x = 16,857.79

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1.5x scale

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.