Home / 21,107.44-29,125.73-12,157.85

Finding the Fourth Proportional to 21,107.44, 29,125.73 and 12,157.85

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Solution

The fourth proportional to 21,107.44, 29,125.73 and 12,157.85 is: 16,776.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,107.44 : 29,125.73 = 12,157.85 : x
  2. Step 2: Convert to fraction form
    21,107.44/29,125.73 = 12,157.85/x
  3. Step 3: Cross multiply
    21,107.44x = 29,125.73 × 12,157.85
  4. Step 4: Simplify right side
    21,107.44x = 354,106,359.69
  5. Step 5: Solve for x
    x = 354,106,359.69/21,107.44
  6. Step 6: Final answer
    x = 16,776.38

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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.