Home / 21,450.45-29,602.36-11,890.23

Finding the Fourth Proportional to 21,450.45, 29,602.36 and 11,890.23

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Solution

The fourth proportional to 21,450.45, 29,602.36 and 11,890.23 is: 16,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.45 : 29,602.36 = 11,890.23 : x
  2. Step 2: Convert to fraction form
    21,450.45/29,602.36 = 11,890.23/x
  3. Step 3: Cross multiply
    21,450.45x = 29,602.36 × 11,890.23
  4. Step 4: Simplify right side
    21,450.45x = 351,978,772.80
  5. Step 5: Solve for x
    x = 351,978,772.80/21,450.45
  6. Step 6: Final answer
    x = 16,408.92

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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.