Home / 12,104.46-16,707.51-8,520.21

Finding the Fourth Proportional to 12,104.46, 16,707.51 and 8,520.21

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Solution

The fourth proportional to 12,104.46, 16,707.51 and 8,520.21 is: 11,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,104.46 : 16,707.51 = 8,520.21 : x
  2. Step 2: Convert to fraction form
    12,104.46/16,707.51 = 8,520.21/x
  3. Step 3: Cross multiply
    12,104.46x = 16,707.51 × 8,520.21
  4. Step 4: Simplify right side
    12,104.46x = 142,351,493.78
  5. Step 5: Solve for x
    x = 142,351,493.78/12,104.46
  6. Step 6: Final answer
    x = 11,760.25

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Double scale
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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.