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Finding the Fourth Proportional to 21,626.99, 29,842.58 and 12,672.44

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Solution

The fourth proportional to 21,626.99, 29,842.58 and 12,672.44 is: 17,486.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,626.99 : 29,842.58 = 12,672.44 : x
  2. Step 2: Convert to fraction form
    21,626.99/29,842.58 = 12,672.44/x
  3. Step 3: Cross multiply
    21,626.99x = 29,842.58 × 12,672.44
  4. Step 4: Simplify right side
    21,626.99x = 378,178,241.13
  5. Step 5: Solve for x
    x = 378,178,241.13/21,626.99
  6. Step 6: Final answer
    x = 17,486.40

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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.