Home / 13,480.24-20,318.12-12,372.16

Finding the Fourth Proportional to 13,480.24, 20,318.12 and 12,372.16

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Solution

The fourth proportional to 13,480.24, 20,318.12 and 12,372.16 is: 18,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.24 : 20,318.12 = 12,372.16 : x
  2. Step 2: Convert to fraction form
    13,480.24/20,318.12 = 12,372.16/x
  3. Step 3: Cross multiply
    13,480.24x = 20,318.12 × 12,372.16
  4. Step 4: Simplify right side
    13,480.24x = 251,379,031.54
  5. Step 5: Solve for x
    x = 251,379,031.54/13,480.24
  6. Step 6: Final answer
    x = 18,647.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.