Home / 20,466.72-28,218.24-13,381.92

Finding the Fourth Proportional to 20,466.72, 28,218.24 and 13,381.92

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Solution

The fourth proportional to 20,466.72, 28,218.24 and 13,381.92 is: 18,450.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466.72 : 28,218.24 = 13,381.92 : x
  2. Step 2: Convert to fraction form
    20,466.72/28,218.24 = 13,381.92/x
  3. Step 3: Cross multiply
    20,466.72x = 28,218.24 × 13,381.92
  4. Step 4: Simplify right side
    20,466.72x = 377,614,230.22
  5. Step 5: Solve for x
    x = 377,614,230.22/20,466.72
  6. Step 6: Final answer
    x = 18,450.16

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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.