Home / 21,168.45-29,205.90-12,214.80

Finding the Fourth Proportional to 21,168.45, 29,205.90 and 12,214.80

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Solution

The fourth proportional to 21,168.45, 29,205.90 and 12,214.80 is: 16,852.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,168.45 : 29,205.90 = 12,214.80 : x
  2. Step 2: Convert to fraction form
    21,168.45/29,205.90 = 12,214.80/x
  3. Step 3: Cross multiply
    21,168.45x = 29,205.90 × 12,214.80
  4. Step 4: Simplify right side
    21,168.45x = 356,744,227.32
  5. Step 5: Solve for x
    x = 356,744,227.32/21,168.45
  6. Step 6: Final answer
    x = 16,852.64

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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.