Home / 13,644.19-20,444.43-12,331.99

Finding the Fourth Proportional to 13,644.19, 20,444.43 and 12,331.99

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Solution

The fourth proportional to 13,644.19, 20,444.43 and 12,331.99 is: 18,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.19 : 20,444.43 = 12,331.99 : x
  2. Step 2: Convert to fraction form
    13,644.19/20,444.43 = 12,331.99/x
  3. Step 3: Cross multiply
    13,644.19x = 20,444.43 × 12,331.99
  4. Step 4: Simplify right side
    13,644.19x = 252,120,506.32
  5. Step 5: Solve for x
    x = 252,120,506.32/13,644.19
  6. Step 6: Final answer
    x = 18,478.23

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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.