Home / 21,356.89-29,471.93-11,796.97

Finding the Fourth Proportional to 21,356.89, 29,471.93 and 11,796.97

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Solution

The fourth proportional to 21,356.89, 29,471.93 and 11,796.97 is: 16,279.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,356.89 : 29,471.93 = 11,796.97 : x
  2. Step 2: Convert to fraction form
    21,356.89/29,471.93 = 11,796.97/x
  3. Step 3: Cross multiply
    21,356.89x = 29,471.93 × 11,796.97
  4. Step 4: Simplify right side
    21,356.89x = 347,679,474.05
  5. Step 5: Solve for x
    x = 347,679,474.05/21,356.89
  6. Step 6: Final answer
    x = 16,279.50

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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.