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Finding the Fourth Proportional to 21,498.89, 29,666.84 and 12,065.63

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Solution

The fourth proportional to 21,498.89, 29,666.84 and 12,065.63 is: 16,649.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,498.89 : 29,666.84 = 12,065.63 : x
  2. Step 2: Convert to fraction form
    21,498.89/29,666.84 = 12,065.63/x
  3. Step 3: Cross multiply
    21,498.89x = 29,666.84 × 12,065.63
  4. Step 4: Simplify right side
    21,498.89x = 357,948,906.05
  5. Step 5: Solve for x
    x = 357,948,906.05/21,498.89
  6. Step 6: Final answer
    x = 16,649.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.