Home / 22,205.75-30,643.40-12,134.21

Finding the Fourth Proportional to 22,205.75, 30,643.40 and 12,134.21

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Solution

The fourth proportional to 22,205.75, 30,643.40 and 12,134.21 is: 16,744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,205.75 : 30,643.40 = 12,134.21 : x
  2. Step 2: Convert to fraction form
    22,205.75/30,643.40 = 12,134.21/x
  3. Step 3: Cross multiply
    22,205.75x = 30,643.40 × 12,134.21
  4. Step 4: Simplify right side
    22,205.75x = 371,833,236.83
  5. Step 5: Solve for x
    x = 371,833,236.83/22,205.75
  6. Step 6: Final answer
    x = 16,744.91

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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.