Home / 21,113.98-29,110.82-13,546.96

Finding the Fourth Proportional to 21,113.98, 29,110.82 and 13,546.96

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Solution

The fourth proportional to 21,113.98, 29,110.82 and 13,546.96 is: 18,677.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,113.98 : 29,110.82 = 13,546.96 : x
  2. Step 2: Convert to fraction form
    21,113.98/29,110.82 = 13,546.96/x
  3. Step 3: Cross multiply
    21,113.98x = 29,110.82 × 13,546.96
  4. Step 4: Simplify right side
    21,113.98x = 394,362,973.60
  5. Step 5: Solve for x
    x = 394,362,973.60/21,113.98
  6. Step 6: Final answer
    x = 18,677.82

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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.