Home / 21,330.72-29,450.97-13,795.29

Finding the Fourth Proportional to 21,330.72, 29,450.97 and 13,795.29

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Solution

The fourth proportional to 21,330.72, 29,450.97 and 13,795.29 is: 19,046.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.72 : 29,450.97 = 13,795.29 : x
  2. Step 2: Convert to fraction form
    21,330.72/29,450.97 = 13,795.29/x
  3. Step 3: Cross multiply
    21,330.72x = 29,450.97 × 13,795.29
  4. Step 4: Simplify right side
    21,330.72x = 406,284,671.93
  5. Step 5: Solve for x
    x = 406,284,671.93/21,330.72
  6. Step 6: Final answer
    x = 19,046.93

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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.