Home / 21,450.31-29,600.88-12,019.48

Finding the Fourth Proportional to 21,450.31, 29,600.88 and 12,019.48

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Solution

The fourth proportional to 21,450.31, 29,600.88 and 12,019.48 is: 16,586.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,450.31 : 29,600.88 = 12,019.48 : x
  2. Step 2: Convert to fraction form
    21,450.31/29,600.88 = 12,019.48/x
  3. Step 3: Cross multiply
    21,450.31x = 29,600.88 × 12,019.48
  4. Step 4: Simplify right side
    21,450.31x = 355,787,185.14
  5. Step 5: Solve for x
    x = 355,787,185.14/21,450.31
  6. Step 6: Final answer
    x = 16,586.58

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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.