Home / 18,372.20-25,344.96-12,405.80

Finding the Fourth Proportional to 18,372.20, 25,344.96 and 12,405.80

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Solution

The fourth proportional to 18,372.20, 25,344.96 and 12,405.80 is: 17,114.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.20 : 25,344.96 = 12,405.80 : x
  2. Step 2: Convert to fraction form
    18,372.20/25,344.96 = 12,405.80/x
  3. Step 3: Cross multiply
    18,372.20x = 25,344.96 × 12,405.80
  4. Step 4: Simplify right side
    18,372.20x = 314,424,504.77
  5. Step 5: Solve for x
    x = 314,424,504.77/18,372.20
  6. Step 6: Final answer
    x = 17,114.15

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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.