Home / 21,605.90-29,817.30-12,654.09

Finding the Fourth Proportional to 21,605.90, 29,817.30 and 12,654.09

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Solution

The fourth proportional to 21,605.90, 29,817.30 and 12,654.09 is: 17,463.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,605.90 : 29,817.30 = 12,654.09 : x
  2. Step 2: Convert to fraction form
    21,605.90/29,817.30 = 12,654.09/x
  3. Step 3: Cross multiply
    21,605.90x = 29,817.30 × 12,654.09
  4. Step 4: Simplify right side
    21,605.90x = 377,310,585.40
  5. Step 5: Solve for x
    x = 377,310,585.40/21,605.90
  6. Step 6: Final answer
    x = 17,463.31

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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.