Home / 21,336.53-29,444.43-11,905.09

Finding the Fourth Proportional to 21,336.53, 29,444.43 and 11,905.09

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Solution

The fourth proportional to 21,336.53, 29,444.43 and 11,905.09 is: 16,429.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.53 : 29,444.43 = 11,905.09 : x
  2. Step 2: Convert to fraction form
    21,336.53/29,444.43 = 11,905.09/x
  3. Step 3: Cross multiply
    21,336.53x = 29,444.43 × 11,905.09
  4. Step 4: Simplify right side
    21,336.53x = 350,538,589.15
  5. Step 5: Solve for x
    x = 350,538,589.15/21,336.53
  6. Step 6: Final answer
    x = 16,429.03

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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.