Home / 21,486.46-29,651.18-12,055

Finding the Fourth Proportional to 21,486.46, 29,651.18 and 12,055

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Solution

The fourth proportional to 21,486.46, 29,651.18 and 12,055 is: 16,635.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,486.46 : 29,651.18 = 12,055 : x
  2. Step 2: Convert to fraction form
    21,486.46/29,651.18 = 12,055/x
  3. Step 3: Cross multiply
    21,486.46x = 29,651.18 × 12,055
  4. Step 4: Simplify right side
    21,486.46x = 357,444,974.90
  5. Step 5: Solve for x
    x = 357,444,974.90/21,486.46
  6. Step 6: Final answer
    x = 16,635.82

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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.