Home / 21,338.02-29,446.50-11,906.61

Finding the Fourth Proportional to 21,338.02, 29,446.50 and 11,906.61

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Solution

The fourth proportional to 21,338.02, 29,446.50 and 11,906.61 is: 16,431.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.02 : 29,446.50 = 11,906.61 : x
  2. Step 2: Convert to fraction form
    21,338.02/29,446.50 = 11,906.61/x
  3. Step 3: Cross multiply
    21,338.02x = 29,446.50 × 11,906.61
  4. Step 4: Simplify right side
    21,338.02x = 350,607,991.37
  5. Step 5: Solve for x
    x = 350,607,991.37/21,338.02
  6. Step 6: Final answer
    x = 16,431.14

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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.