Home / 21,361.80-29,476.42-11,928.68

Finding the Fourth Proportional to 21,361.80, 29,476.42 and 11,928.68

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Solution

The fourth proportional to 21,361.80, 29,476.42 and 11,928.68 is: 16,459.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,361.80 : 29,476.42 = 11,928.68 : x
  2. Step 2: Convert to fraction form
    21,361.80/29,476.42 = 11,928.68/x
  3. Step 3: Cross multiply
    21,361.80x = 29,476.42 × 11,928.68
  4. Step 4: Simplify right side
    21,361.80x = 351,614,781.73
  5. Step 5: Solve for x
    x = 351,614,781.73/21,361.80
  6. Step 6: Final answer
    x = 16,459.98

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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.