Home / 21,190.00-29,241.89-12,115.26

Finding the Fourth Proportional to 21,190.00, 29,241.89 and 12,115.26

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Solution

The fourth proportional to 21,190.00, 29,241.89 and 12,115.26 is: 16,718.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.00 : 29,241.89 = 12,115.26 : x
  2. Step 2: Convert to fraction form
    21,190.00/29,241.89 = 12,115.26/x
  3. Step 3: Cross multiply
    21,190.00x = 29,241.89 × 12,115.26
  4. Step 4: Simplify right side
    21,190.00x = 354,273,133.27
  5. Step 5: Solve for x
    x = 354,273,133.27/21,190.00
  6. Step 6: Final answer
    x = 16,718.89

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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.