Home / 21,923.42-30,250.14-12,491.78

Finding the Fourth Proportional to 21,923.42, 30,250.14 and 12,491.78

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Solution

The fourth proportional to 21,923.42, 30,250.14 and 12,491.78 is: 17,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,923.42 : 30,250.14 = 12,491.78 : x
  2. Step 2: Convert to fraction form
    21,923.42/30,250.14 = 12,491.78/x
  3. Step 3: Cross multiply
    21,923.42x = 30,250.14 × 12,491.78
  4. Step 4: Simplify right side
    21,923.42x = 377,878,093.85
  5. Step 5: Solve for x
    x = 377,878,093.85/21,923.42
  6. Step 6: Final answer
    x = 17,236.27

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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.