Home / 21,144.38-29,166.41-13,974.35

Finding the Fourth Proportional to 21,144.38, 29,166.41 and 13,974.35

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Solution

The fourth proportional to 21,144.38, 29,166.41 and 13,974.35 is: 19,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.38 : 29,166.41 = 13,974.35 : x
  2. Step 2: Convert to fraction form
    21,144.38/29,166.41 = 13,974.35/x
  3. Step 3: Cross multiply
    21,144.38x = 29,166.41 × 13,974.35
  4. Step 4: Simplify right side
    21,144.38x = 407,581,729.44
  5. Step 5: Solve for x
    x = 407,581,729.44/21,144.38
  6. Step 6: Final answer
    x = 19,276.13

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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.