Home / 13,312.15-19,968.22-3,451.21

Finding the Fourth Proportional to 13,312.15, 19,968.22 and 3,451.21

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Solution

The fourth proportional to 13,312.15, 19,968.22 and 3,451.21 is: 5,176.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312.15 : 19,968.22 = 3,451.21 : x
  2. Step 2: Convert to fraction form
    13,312.15/19,968.22 = 3,451.21/x
  3. Step 3: Cross multiply
    13,312.15x = 19,968.22 × 3,451.21
  4. Step 4: Simplify right side
    13,312.15x = 68,914,474.94
  5. Step 5: Solve for x
    x = 68,914,474.94/13,312.15
  6. Step 6: Final answer
    x = 5,176.81

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.