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Finding the Fourth Proportional to 21,486.73, 29,651.22 and 11,926.06

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Solution

The fourth proportional to 21,486.73, 29,651.22 and 11,926.06 is: 16,457.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.73 : 29,651.22 = 11,926.06 : x
  2. Step 2: Convert to fraction form
    21,486.73/29,651.22 = 11,926.06/x
  3. Step 3: Cross multiply
    21,486.73x = 29,651.22 × 11,926.06
  4. Step 4: Simplify right side
    21,486.73x = 353,622,154.67
  5. Step 5: Solve for x
    x = 353,622,154.67/21,486.73
  6. Step 6: Final answer
    x = 16,457.70

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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.