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Finding the Fourth Proportional to 21,364.98, 29,477.97 and 11,933.34

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Solution

The fourth proportional to 21,364.98, 29,477.97 and 11,933.34 is: 16,464.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,364.98 : 29,477.97 = 11,933.34 : x
  2. Step 2: Convert to fraction form
    21,364.98/29,477.97 = 11,933.34/x
  3. Step 3: Cross multiply
    21,364.98x = 29,477.97 × 11,933.34
  4. Step 4: Simplify right side
    21,364.98x = 351,770,638.52
  5. Step 5: Solve for x
    x = 351,770,638.52/21,364.98
  6. Step 6: Final answer
    x = 16,464.82

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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.