Home / 21,626.70-29,845.89-12,195.06

Finding the Fourth Proportional to 21,626.70, 29,845.89 and 12,195.06

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Solution

The fourth proportional to 21,626.70, 29,845.89 and 12,195.06 is: 16,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.70 : 29,845.89 = 12,195.06 : x
  2. Step 2: Convert to fraction form
    21,626.70/29,845.89 = 12,195.06/x
  3. Step 3: Cross multiply
    21,626.70x = 29,845.89 × 12,195.06
  4. Step 4: Simplify right side
    21,626.70x = 363,972,419.30
  5. Step 5: Solve for x
    x = 363,972,419.30/21,626.70
  6. Step 6: Final answer
    x = 16,829.77

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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.