Home / 13,407.21-18,487.37-8,369.62

Finding the Fourth Proportional to 13,407.21, 18,487.37 and 8,369.62

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Solution

The fourth proportional to 13,407.21, 18,487.37 and 8,369.62 is: 11,540.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,407.21 : 18,487.37 = 8,369.62 : x
  2. Step 2: Convert to fraction form
    13,407.21/18,487.37 = 8,369.62/x
  3. Step 3: Cross multiply
    13,407.21x = 18,487.37 × 8,369.62
  4. Step 4: Simplify right side
    13,407.21x = 154,732,236.41
  5. Step 5: Solve for x
    x = 154,732,236.41/13,407.21
  6. Step 6: Final answer
    x = 11,540.97

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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.