Home / 21,922.70-30,253.32-12,491.25

Finding the Fourth Proportional to 21,922.70, 30,253.32 and 12,491.25

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Solution

The fourth proportional to 21,922.70, 30,253.32 and 12,491.25 is: 17,237.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,922.70 : 30,253.32 = 12,491.25 : x
  2. Step 2: Convert to fraction form
    21,922.70/30,253.32 = 12,491.25/x
  3. Step 3: Cross multiply
    21,922.70x = 30,253.32 × 12,491.25
  4. Step 4: Simplify right side
    21,922.70x = 377,901,783.45
  5. Step 5: Solve for x
    x = 377,901,783.45/21,922.70
  6. Step 6: Final answer
    x = 17,237.93

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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.