Home / 21,166.80-29,205.44-12,213.72

Finding the Fourth Proportional to 21,166.80, 29,205.44 and 12,213.72

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Solution

The fourth proportional to 21,166.80, 29,205.44 and 12,213.72 is: 16,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,166.80 : 29,205.44 = 12,213.72 : x
  2. Step 2: Convert to fraction form
    21,166.80/29,205.44 = 12,213.72/x
  3. Step 3: Cross multiply
    21,166.80x = 29,205.44 × 12,213.72
  4. Step 4: Simplify right side
    21,166.80x = 356,707,066.64
  5. Step 5: Solve for x
    x = 356,707,066.64/21,166.80
  6. Step 6: Final answer
    x = 16,852.20

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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.