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Finding the Fourth Proportional to 21,502.70, 29,675.59 and 12,553.09

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Solution

The fourth proportional to 21,502.70, 29,675.59 and 12,553.09 is: 17,324.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,502.70 : 29,675.59 = 12,553.09 : x
  2. Step 2: Convert to fraction form
    21,502.70/29,675.59 = 12,553.09/x
  3. Step 3: Cross multiply
    21,502.70x = 29,675.59 × 12,553.09
  4. Step 4: Simplify right side
    21,502.70x = 372,520,352.07
  5. Step 5: Solve for x
    x = 372,520,352.07/21,502.70
  6. Step 6: Final answer
    x = 17,324.35

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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.