Home / 12,213.63-16,840.04-10,321.88

Finding the Fourth Proportional to 12,213.63, 16,840.04 and 10,321.88

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Solution

The fourth proportional to 12,213.63, 16,840.04 and 10,321.88 is: 14,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.63 : 16,840.04 = 10,321.88 : x
  2. Step 2: Convert to fraction form
    12,213.63/16,840.04 = 10,321.88/x
  3. Step 3: Cross multiply
    12,213.63x = 16,840.04 × 10,321.88
  4. Step 4: Simplify right side
    12,213.63x = 173,820,736.27
  5. Step 5: Solve for x
    x = 173,820,736.27/12,213.63
  6. Step 6: Final answer
    x = 14,231.70

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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.